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Nicole M, Maddie B, Jordan, Shelly, Maddie G, Emma, Nora
Taking the 1st Implicit Derivative
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Taking derivatives implicitly is a process saved for instances in which the function in question is not set out or able to be changed into a y = x format.
Take, for example, a function like this:
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No matter what is done to this function, x and y cannot be completely separated onto their own sides into a y = x format. Therefore, the only way to take the derivative of this function is to take the derivative implicitly.
Taking an implicit derivative is nearly identical to that of taking a derivative normally, except you must multiply all derivatives of y by dy/dx.
Here is how you take the derivative of the above function:
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=
2
4y (dy/dx) + (x (dy/dx) + 2xy) - 1 = 0 --> 4y (dy/dx) + x (dy/dx) +2xy - 1 = 0
4y (dy/dx) + x (dy/dx) = 1 - 2xy --> (dy/dx)(4y + x ) = 1 - 2xy
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3
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3
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y + x y - x = 31
(dy/dx)
1 - 2xy
4y +x
3
2