Calculus 1 : Calculus

Study concepts, example questions & explanations for Calculus 1

varsity tutors app store varsity tutors android store

Example Questions

Example Question #552 : Other Differential Functions

The expression of a particular function is unknown; however, we have an expression for its derivative. Knowing that \(\displaystyle f'(x)=(cos(x))^{cos(x)}\) and \(\displaystyle y(0)=4\), approximate \(\displaystyle y(1.5)\) using Euler's Method and three steps.

Possible Answers:

\(\displaystyle 4.783\)

\(\displaystyle 5.112\)

\(\displaystyle 4.292\)

\(\displaystyle 5.305\)

\(\displaystyle 5.496\)

Correct answer:

\(\displaystyle 5.305\)

Explanation:

The general form of Euler's method, when a derivative function, initial value, and step size are known, is:

\(\displaystyle y_n=y_{n+1} +\Delta x f'(x_n,y_n)\)

To calculate the step size find the distance between the final and initial \(\displaystyle x\) value and divide by the number of steps to be used:

\(\displaystyle \Delta x = \frac{x_f-x_i}{Steps}\)

For this problem, we are told \(\displaystyle f'(x)=(cos(x))^{cos(x)}\) and \(\displaystyle y(0)=4\)

Knowing this, we may take the steps to estimate our function value at our final \(\displaystyle x\) value:

\(\displaystyle \Delta x = \frac{1.5-0}{3}=0.5\)

\(\displaystyle y_0=4,x_0=0\)

\(\displaystyle y_1=4+0.5(cos(0))^{cos(0)}=4.5\)

\(\displaystyle y_2=4.5+0.5(cos(0.5))^{cos(0.5)}=4.946\)

\(\displaystyle y_3=4.946+0.5(cos(1))^{cos(1)}=5.305\)

 

Example Question #1772 : Calculus

The expression of a particular function is unknown; however, we have an expression for its derivative. Knowing that \(\displaystyle f'(x)=cot(x^2)\) and \(\displaystyle y(1)=5\), approximate \(\displaystyle y(1.6)\) using Euler's Method and three steps.

Possible Answers:

\(\displaystyle 5.276\)

\(\displaystyle 4.938\)

\(\displaystyle 5.191\)

\(\displaystyle 5.072\)

\(\displaystyle 5.409\)

Correct answer:

\(\displaystyle 5.072\)

Explanation:

The general form of Euler's method, when a derivative function, initial value, and step size are known, is:

\(\displaystyle y_n=y_{n+1} +\Delta x f'(x_n,y_n)\)

To calculate the step size find the distance between the final and initial \(\displaystyle x\) value and divide by the number of steps to be used:

\(\displaystyle \Delta x = \frac{x_f-x_i}{Steps}\)

For this problem, we are told \(\displaystyle f'(x)=cot(x^2)\) and \(\displaystyle y(1)=5\)

Knowing this, we may take the steps to estimate our function value at our final \(\displaystyle x\) value:

\(\displaystyle \Delta x = \frac{1.6-1}{3}=0.2\)

\(\displaystyle y_0=5,x_0=1\)

\(\displaystyle y_1=5+(0.2)cot(1^2)=5.128\)

\(\displaystyle y_2=5.128+(0.2)cot(1.2^2)=5.154\)

\(\displaystyle y_3=5.154+(0.2)cot(1.4^2)=5.072\)

Example Question #1773 : Calculus

The expression of a particular function is unknown; however, we have an expression for its derivative. Knowing that \(\displaystyle f'(x)=tan(ln(ln(x)))\) and \(\displaystyle y(2)=0\), approximate \(\displaystyle y(5)\) using Euler's Method and three steps.

Possible Answers:

\(\displaystyle -0.265\)

\(\displaystyle 0.049\)

\(\displaystyle -0.517\)

\(\displaystyle 0.183\)

\(\displaystyle -0.384\)

Correct answer:

\(\displaystyle 0.049\)

Explanation:

The general form of Euler's method, when a derivative function, initial value, and step size are known, is:

\(\displaystyle y_n=y_{n+1} +\Delta x f'(x_n,y_n)\)

To calculate the step size find the distance between the final and initial \(\displaystyle x\) value and divide by the number of steps to be used:

\(\displaystyle \Delta x = \frac{x_f-x_i}{Steps}\)

For this problem, we are told \(\displaystyle f'(x)=tan(ln(ln(x)))\) and \(\displaystyle y(2)=0\)

Knowing this, we may take the steps to estimate our function value at our final \(\displaystyle x\) value:

\(\displaystyle \Delta x = \frac{5-2}{3}=1\)

\(\displaystyle y_0=0;x_0=2\)

\(\displaystyle y_1=0+(1)tan(ln(ln(2)))=-0.384\)

\(\displaystyle y_2=-0.384+(1)tan(ln(ln(3)))=-0.290\)

\(\displaystyle y_3=-0.290+(1)tan(ln(ln(4)))=0.049\)

Example Question #1774 : Calculus

The expression of a particular function is unknown; however, we have an expression for its derivative. Knowing that \(\displaystyle f'(x)=sec(x^4)\) and \(\displaystyle y(1)=10\), approximate \(\displaystyle y(2)\) using Euler's Method and four steps.

Possible Answers:

\(\displaystyle 10.615\)

\(\displaystyle 10.725\)

\(\displaystyle 10.515\)

\(\displaystyle 10.983\)

\(\displaystyle 10.422\)

Correct answer:

\(\displaystyle 10.615\)

Explanation:

The general form of Euler's method, when a derivative function, initial value, and step size are known, is:

\(\displaystyle y_n=y_{n+1} +\Delta x f'(x_n,y_n)\)

To calculate the step size find the distance between the final and initial \(\displaystyle x\) value and divide by the number of steps to be used:

\(\displaystyle \Delta x = \frac{x_f-x_i}{Steps}\)

For this problem, we are told\(\displaystyle f'(x)=sec(x^4)\) and \(\displaystyle y(1)=10\)

Knowing this, we may take the steps to estimate our function value at our final \(\displaystyle x\) value:

\(\displaystyle \Delta x = \frac{2-1}{4}=0.25\)

\(\displaystyle y_0=10;x_0=1\)

\(\displaystyle y_1=10+(0.25)sec(1^4)=10.463\)

\(\displaystyle y_2=10.463+(0.25)sec(1.25^4)=10.136\)

\(\displaystyle y_3=10.136+(0.25)sec(1.5^4)=10.865\)

\(\displaystyle y_4=10.865+(0.25)sec(1.75^4)=10.615\)

Example Question #1775 : Calculus

The expression of a particular function is unknown; however, we have an expression for its derivative. Knowing that \(\displaystyle f'(x)=csc(2^x)\) and \(\displaystyle y(1)=3\), approximate \(\displaystyle y(5)\) using Euler's Method and four steps.

Possible Answers:

\(\displaystyle 1.208\)

\(\displaystyle 3.790\)

\(\displaystyle 4.100\)

\(\displaystyle 2.779\)

\(\displaystyle 0.317\)

Correct answer:

\(\displaystyle 0.317\)

Explanation:

The general form of Euler's method, when a derivative function, initial value, and step size are known, is:

\(\displaystyle y_n=y_{n+1} +\Delta x f'(x_n,y_n)\)

To calculate the step size find the distance between the final and initial \(\displaystyle x\) value and divide by the number of steps to be used:

\(\displaystyle \Delta x = \frac{x_f-x_i}{Steps}\)

For this problem, we are told \(\displaystyle f'(x)=csc(2^x)\) and \(\displaystyle y(1)=3\)

Knowing this, we may take the steps to estimate our function value at our final \(\displaystyle x\) value:

\(\displaystyle \Delta x = \frac{5-1}{4}=1\)

\(\displaystyle y_0=3;x_0=1\)

\(\displaystyle y_1=3+(1)csc(2^1)=4.100\)

\(\displaystyle y_2=4.100+(1)csc(2^2)=2.779\)

\(\displaystyle y_3=2.779+(1)csc(2^3)=3.790\)

\(\displaystyle y_4=3.790+(1)csc(2^4)=0.317\)

Example Question #1776 : Calculus

The expression of a particular function is unknown; however, we have an expression for its derivative. Knowing that \(\displaystyle f'(x)=11^{x^6}\) and \(\displaystyle y(1)=5\), approximate \(\displaystyle y(1.16)\) using Euler's Method and four steps.

Possible Answers:

\(\displaystyle 12.614\)

\(\displaystyle 12.025\)

\(\displaystyle 8.098\)

\(\displaystyle 15.622\)

\(\displaystyle 13.159\)

Correct answer:

\(\displaystyle 12.614\)

Explanation:

The general form of Euler's method, when a derivative function, initial value, and step size are known, is:

\(\displaystyle y_n=y_{n+1} +\Delta x f'(x_n,y_n)\)

To calculate the step size find the distance between the final and initial \(\displaystyle x\) value and divide by the number of steps to be used:

\(\displaystyle \Delta x = \frac{x_f-x_i}{Steps}\)

For this problem, we are told \(\displaystyle f'(x)=11^{x^6}\) and \(\displaystyle y(1)=5\)

Knowing this, we may take the steps to estimate our function value at our final \(\displaystyle x\) value:

\(\displaystyle \Delta x = \frac{1.16-1}{4}=0.04\)

\(\displaystyle y_0=5;x_0=1\)

\(\displaystyle y_1=5+(0.04)11^{1^6}=5.44\)

\(\displaystyle y_2=5.44+(0.04)11^{1.04^6}=6.271\)

\(\displaystyle y_3=6.271+(0.04)11^{1.08^6}=8.068\)

\(\displaystyle y_4=8.068+(0.04)11^{1.12^6}=12.614\)

Example Question #1777 : Calculus

The expression of a particular function is unknown; however, we have an expression for its derivative. Knowing that \(\displaystyle f'(x)=sin(\pi cos(4\pi x))\) and \(\displaystyle y(1)=3\), approximate \(\displaystyle y(2)\) using Euler's Method and five steps.

Possible Answers:

\(\displaystyle 3.104\)

\(\displaystyle 3.377\)

\(\displaystyle 3.815\)

\(\displaystyle 3.904\)

\(\displaystyle 2.908\)

Correct answer:

\(\displaystyle 3.104\)

Explanation:

The general form of Euler's method, when a derivative function, initial value, and step size are known, is:

\(\displaystyle y_n=y_{n+1} +\Delta x f'(x_n,y_n)\)

To calculate the step size find the distance between the final and initial \(\displaystyle x\) value and divide by the number of steps to be used:

\(\displaystyle \Delta x = \frac{x_f-x_i}{Steps}\)

For this problem, we are told \(\displaystyle f'(x)=sin(\pi cos(4\pi x))\) and \(\displaystyle y(1)=3\)

Knowing this, we may take the steps to estimate our function value at our final \(\displaystyle x\) value:

\(\displaystyle \Delta x = \frac{2-1}{5}=0.2\)

\(\displaystyle y_0=3;x_0=1\)

\(\displaystyle y_1=3+(0.2)sin(\pi cos(4\pi (1)))=3\)

\(\displaystyle y_2=3+(0.2)sin(\pi cos(4\pi (1.2)))=2.887\)

\(\displaystyle y_3=2.887+(0.2)sin(\pi cos(4\pi (1.4)))=3.052\)

\(\displaystyle y_4=3.052+(0.2)sin(\pi cos(4\pi (1.6)))=3.217\)

\(\displaystyle y_5=3.217+(0.2)sin(\pi cos(4\pi (1.8)))=3.104\)

Example Question #1778 : Calculus

The expression of a particular function is unknown; however, we have an expression for its derivative. Knowing that \(\displaystyle f'(x)=e^{(\frac{1}{4})^x}\) and \(\displaystyle y(0.5)=0\), approximate \(\displaystyle y(1)\) using Euler's Method and five steps.

Possible Answers:

\(\displaystyle 0.738\)

\(\displaystyle 0.812\)

\(\displaystyle 0.611\)

\(\displaystyle 0.545\)

\(\displaystyle 0.689\)

Correct answer:

\(\displaystyle 0.738\)

Explanation:

The general form of Euler's method, when a derivative function, initial value, and step size are known, is:

\(\displaystyle y_n=y_{n+1} +\Delta x f'(x_n,y_n)\)

To calculate the step size find the distance between the final and initial \(\displaystyle x\) value and divide by the number of steps to be used:

\(\displaystyle \Delta x = \frac{x_f-x_i}{Steps}\)

For this problem, we are told \(\displaystyle f'(x)=e^{(\frac{1}{4})^x}\) and \(\displaystyle y(0.5)=0\)

Knowing this, we may take the steps to estimate our function value at our final \(\displaystyle x\) value:

\(\displaystyle \Delta x = \frac{1-0.5}{5}=0.1\)

\(\displaystyle y_0=0;x_0=0.5\)

\(\displaystyle y_1=0+(0.1)e^{(\frac{1}{4})^{0.5}}=0.165\)

\(\displaystyle y_2=0.165+(0.1)e^{(\frac{1}{4})^{0.6}}=0.320\)

\(\displaystyle y_3=0.320+(0.1)e^{(\frac{1}{4})^{0.7}}=0.466\)

\(\displaystyle y_4=0.466+(0.1)e^{(\frac{1}{4})^{0.8}}=0.605\)

\(\displaystyle y_5=0.605+(0.1)e^{(\frac{1}{4})^{0.9}}=0.738\)

Example Question #1771 : Calculus

The expression of a particular function is unknown; however, we have an expression for its derivative. Knowing that \(\displaystyle f'(x)=ln(csc(x))\) and \(\displaystyle y(1)=0\), approximate \(\displaystyle y(1.75)\) using Euler's Method and five steps.

Possible Answers:

\(\displaystyle 0.040\)

\(\displaystyle 0.054\)

\(\displaystyle 0.051\)

\(\displaystyle 0.047\)

\(\displaystyle 0.033\)

Correct answer:

\(\displaystyle 0.047\)

Explanation:

The general form of Euler's method, when a derivative function, initial value, and step size are known, is:

\(\displaystyle y_n=y_{n+1} +\Delta x f'(x_n,y_n)\)

To calculate the step size find the distance between the final and initial \(\displaystyle x\) value and divide by the number of steps to be used:

\(\displaystyle \Delta x = \frac{x_f-x_i}{Steps}\)

For this problem, we are told \(\displaystyle f'(x)=ln(csc(x))\) and \(\displaystyle y(1)=0\)

Knowing this, we may take the steps to estimate our function value at our final \(\displaystyle x\) value:

\(\displaystyle \Delta x = \frac{1.75-1}{5}=0.15\)

\(\displaystyle y_0=0;x_0=1\)

\(\displaystyle y_1=0+(0.15)ln(csc(1))=0.026\)

\(\displaystyle y_2=0.026+(0.15)ln(csc(1.15))=0.040\)

\(\displaystyle y_3=0.040+(0.15)ln(csc(1.30))=0.046\)

\(\displaystyle y_4=0.046+(0.15)ln(csc(1.45))=0.047\)

\(\displaystyle y_5=0.047+(0.15)ln(csc(1.60))=0.047\)

Example Question #1772 : Calculus

The expression of a particular function is unknown; however, we have an expression for its derivative. Knowing that \(\displaystyle f'(x)=1.4^{cos(\pi e^{x})}\) and \(\displaystyle y(0)=0\), approximate \(\displaystyle y(4)\) using Euler's Method and five steps.

Possible Answers:

\(\displaystyle 2.750\)

\(\displaystyle 5.598\)

\(\displaystyle 3.523\)

\(\displaystyle 4.285\)

\(\displaystyle 4.009\)

Correct answer:

\(\displaystyle 3.523\)

Explanation:

The general form of Euler's method, when a derivative function, initial value, and step size are known, is:

\(\displaystyle y_n=y_{n+1} +\Delta x f'(x_n,y_n)\)

To calculate the step size find the distance between the final and initial \(\displaystyle x\) value and divide by the number of steps to be used:

\(\displaystyle \Delta x = \frac{x_f-x_i}{Steps}\)

For this problem, we are told \(\displaystyle f'(x)=1.4^{cos(\pi e^{x})}\) and \(\displaystyle y(0)=0\)

Knowing this, we may take the steps to estimate our function value at our final \(\displaystyle x\) value:

\(\displaystyle \Delta x = \frac{4-0}{5}=0.8\)

\(\displaystyle y_0=0;x_0=0\)

\(\displaystyle y_1=0+(0.8)1.4^{cos(\pi e^{0})}=0.571\)

\(\displaystyle y_2=0.571+(0.8)1.4^{cos(\pi e^{0.8})}=1.604\)

\(\displaystyle y_3=1.604+(0.8)1.4^{cos(\pi e^{1.6})}=2.178\)

\(\displaystyle y_4=2.178+(0.8)1.4^{cos(\pi e^{2.4})}=2.750\)

\(\displaystyle y_5=2.750+(0.8)1.4^{cos(\pi e^{3.2})}=3.523\)

Learning Tools by Varsity Tutors