Q. Given the function y=(2x−1)4, find dxdy in any form.Answer: dxdy=
Apply Chain Rule: To find the derivative of the function y=(2x−1)4 with respect to x, we will use the chain rule. The chain rule states that the derivative of a composite function is the derivative of the outer function evaluated at the inner function times the derivative of the inner function.
Derivative of Outer Function: The outer function is u4 and the inner function is u=2x−1. We first take the derivative of the outer function with respect to u, which is 4u3.
Derivative of Inner Function: Next, we take the derivative of the inner function with respect to x, which is the derivative of 2x−1. The derivative of 2x is 2, and the derivative of −1 is 0, so the derivative of the inner function is 2.
Chain Rule Application: Now we apply the chain rule by multiplying the derivative of the outer function by the derivative of the inner function. This gives us (dxdy)=4u3×2.
Substitute back u: Substitute u=2x−1 back into the expression to get the derivative in terms of x. This gives us dxdy=4(2x−1)3×2.
Simplify Expression: Finally, we simplify the expression by multiplying the constants. This gives us (dxdy=8(2x−1)3).
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