Calculus 2 : Parametric, Polar, and Vector

Study concepts, example questions & explanations for Calculus 2

varsity tutors app store varsity tutors android store

Example Questions

Example Question #144 : Polar

What is the derivative of ?

Possible Answers:

Correct answer:

Explanation:

In order to find the derivative   of a polar equation , we must first find the derivative of with respect to  as follows:

We can then swap the given values of  and  into the equation of the derivative of an expression into polar form:

Using the trigonometric identity , we can deduce that . Swapping this into the denominator, we get:

Example Question #821 : Calculus Ii

What is the derivative of ?

 

Possible Answers:

Correct answer:

Explanation:

In order to find the derivative   of a polar equation , we must first find the derivative of with respect to as follows:

We can then swap the given values of and into the equation of the derivative of an expression into polar form:

Using the trigonometric identity , we can deduce that . Swapping this into the denominator, we get:

 

Example Question #313 : Parametric, Polar, And Vector

What is the derivative of ?

Possible Answers:

Correct answer:

Explanation:

In order to find the derivative   of a polar equation , we must first find the derivative of with respect to  as follows:

We can then swap the given values of  and  into the equation of the derivative of an expression into polar form:

 

Using the trigonometric identity , we can deduce that . Swapping this into the denominator, we get:

Example Question #822 : Calculus Ii

What is the derivative of ?

Possible Answers:

Correct answer:

Explanation:

In order to find the derivative   of a polar equation , we must first find the derivative of with respect to  as follows:

We can then swap the given values of  and  into the equation of the derivative of an expression into polar form:

 

Using the trigonometric identity , we can deduce that . Swapping this into the numerator, we get:

Example Question #315 : Parametric, Polar, And Vector

What is the derivative of ?

 

Possible Answers:

Correct answer:

Explanation:

In order to find the derivative   of a polar equation , we must first find the derivative of with respect to as follows:

We can then swap the given values of and into the equation of the derivative of an expression into polar form:

Using the trigonometric identity , we can deduce that . Swapping this into the denominator, we get:

 

Example Question #311 : Parametric, Polar, And Vector

What is the derivative of ?

Possible Answers:

Correct answer:

Explanation:

In order to find the derivative   of a polar equation , we must first find the derivative of with respect to  as follows:

We can then swap the given values of  and  into the equation of the derivative of an expression into polar form:

Using the trigonometric identity , we can deduce that . Swapping this into the denominator, we get:

Example Question #21 : Derivatives Of Polar Form

What is the derivative of ?

Possible Answers:

Correct answer:

Explanation:

In order to find the derivative   of a polar equation , we must first find the derivative of with respect to  as follows:

We can then swap the given values of  and  into the equation of the derivative of an expression into polar form:

Using the trigonometric identity , we can deduce that . Swapping this into the denominator, we get:

Example Question #1 : Polar Calculations

Convert the polar coordinate equation  into its rectangular equivalent, and simplify.

Possible Answers:

None of the other answers

Correct answer:

Explanation:

The polar to rectangular transformation equations are . By substituting these into our given equation we get .

Adding  to both sides, then we get .

Example Question #1 : Polar Calculations

Convert the following polar coordinates of the form into Cartesian coordinates of the form :

Possible Answers:

Correct answer:

Explanation:

In order to convert the given polar coordinates into Cartesian coordinates, we must remember our formulas for x and y in terms of r and :

The problem tells us r and , so all we must do to convert these coordinates is plug them into the formulas above:

So we can see from our conversion that the given polar coordinates are expressed as    in Cartesian coordinates.

Example Question #1 : Polar Calculations

Convert  to Cartesian coordinates.

Possible Answers:

Correct answer:

Explanation:

The following formulas will convert polar coordinates to Cartesian coordinates.

We are given the polar coordinate, which is in  form.  Plug the coordinate into the formulas and solve for x and y.

The Cartesian coordinate form is .

Learning Tools by Varsity Tutors