How do I find f'(1) using implicit differentiation?

In summary, implicit differentiation is used to find the derivative of a function when the variables are not explicitly defined. In this conversation, the problem involves finding f'(1) given a function and a set of equations. The solution involves using implicit differentiation to find the derivative and then solving for f'(1) by setting x=1. Another unrelated problem is mentioned, but it is recommended to start a new thread for it.
  • #1
SSUP21
8
0
"implicit differentiation"

if [x][3] * f(x) + [(f(x))][3] + f([x][3]) = 3 and f(1)= 2 find f'(1)

NEED HELP REVIEW QUESTION FROM EXAM REVIEW
DONT KNOW WHAT TO DO
 
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  • #2


x^3 * f(x) + (f(x))^3 + f(x^3) = 3
and f(1) = 2 find f'(1)

formating error in original post
 
  • #3


Use "implicit differentiation": (x^3 f(x)+ (f(x))^3+ f(x^3))'= 3x^2f(x)+ x^3 f'(x)+ 3f(x)^2 f'(x)+ f'(x^3)(3x^2)= 0. Set x= 1 and solve for f'(1).
 
  • #4


i have a derivative problem that reads 4/ ^5sqrt(x^5). I am not sure how to work the problem out.
 
  • #5


1. Please don't hijack other peoples threads for new questions- start your own thread.
2. I have no idea what "4/ ^5" is supposed to mean.
3. sqrt(x^5)= x5/4.
 

1. What is implicit differentiation?

Implicit differentiation is a mathematical technique used to find the derivative of an equation that is not explicitly written as a function of a single variable. It is used when the dependent variable cannot be easily isolated on one side of the equation.

2. How is implicit differentiation different from regular differentiation?

Regular differentiation involves finding the derivative of a function with respect to a single variable. Implicit differentiation, on the other hand, involves finding the derivative of an equation that is not explicitly written as a function of a single variable. It allows us to find the derivative of a function even when it is difficult or impossible to solve for the dependent variable.

3. What are the steps involved in implicit differentiation?

The steps for implicit differentiation are as follows:

  • Take the derivative of both sides of the equation with respect to the independent variable.
  • Use the chain rule when taking the derivative of any terms with nested functions.
  • For terms with multiple variables, use the product rule or quotient rule as needed.
  • Solve the resulting equation for the derivative of the dependent variable.

4. When is implicit differentiation used?

Implicit differentiation is used when the dependent variable cannot be easily isolated on one side of the equation. This often occurs when the equation involves multiple variables or functions that are difficult to solve for. It is commonly used in physics and engineering applications, as well as in higher level mathematics courses.

5. What are some real-life applications of implicit differentiation?

Implicit differentiation is used in a variety of fields, including physics, economics, and engineering. It can be used to find the rate of change of a quantity in a system, such as the acceleration of an object moving along a curved path. It is also used in optimization problems, where the goal is to find the maximum or minimum value of a function.

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