Differentiate the given function using implicit.

In summary, the given equation is differentiated with respect to x to find dy/dx. After simplifying, the explicit value of dy/dx is found to be (4y-3x^2)/(y-4x).
  • #1
1irishman
243
0

Homework Statement



2x^3 - 8xy + y^2 = 1


Homework Equations






The Attempt at a Solution



d2x^3/dx - d8xy/dx + dy^2/dx = d1/dx
6x^2 -8(y) + dy/dx(-8x) + 2y(dy/dx) = 0
6x^2 - 8y -8x(dy/dx) + 2y(dy/dx) = 0 I am stuck and can't seem to go further. Someone help?
 
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  • #2
youve answered the question - youve differentiated what you were given.

if you want to find dy/dx explicitly, you can try factorizing to get there.
 
  • #3
1irishman said:

Homework Statement



2x^3 - 8xy + y^2 = 1


Homework Equations






The Attempt at a Solution



d2x^3/dx - d8xy/dx + dy^2/dx = d1/dx
6x^2 -8(y) + dy/dx(-8x) + 2y(dy/dx) = 0
6x^2 - 8y -8x(dy/dx) + 2y(dy/dx) = 0 I am stuck and can't seem to go further. Someone help?


[/Qdy/dx = 8y-6x^2/2y-8x=4y-3x^2/y-4x
okay got it thank you. i skipped a couple of steps
UOTE]
 

1. What does it mean to differentiate using implicit?

Differentiating using implicit means finding the derivative of a function that is defined implicitly, rather than explicitly. This means that the function is not in the form of y = f(x), but rather in the form of an equation where both the independent and dependent variables are present.

2. How is implicit differentiation different from explicit differentiation?

Explicit differentiation involves finding the derivative of a function that is defined explicitly, in the form of y = f(x). Implicit differentiation involves finding the derivative of a function that is defined implicitly, where both the independent and dependent variables are present in the equation.

3. What are the steps involved in implicit differentiation?

The steps for implicit differentiation include differentiating both sides of the equation with respect to the independent variable, using the chain rule when necessary, and isolating the derivative on one side of the equation.

4. When should implicit differentiation be used?

Implicit differentiation should be used when the function is defined implicitly and cannot be easily rewritten in the form of y = f(x). This is often the case with equations involving multiple variables or when the dependent variable is not explicitly defined.

5. Can implicit differentiation be used on any type of function?

Yes, implicit differentiation can be used on any type of function, as long as it is defined implicitly. However, it can be more complex and time-consuming compared to explicit differentiation, so it may not always be the preferred method.

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