Identify Functions: To find the derivative of y with respect to x, we need to apply the chain rule to the function y=2sec4(x). 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: First, let's identify the outer function and the inner function. The outer function is u4 where u=sec(x), and the inner function is sec(x). We will need to take the derivative of the outer function with respect to u and then multiply it by the derivative of the inner function with respect to x.
Derivative of Inner Function: The derivative of the outer function u4 with respect to u is 4u3. So, if u=sec(x), then the derivative of u4 with respect to x is 4sec3(x).
Combine Derivatives: Now we need to find the derivative of the inner function sec(x) with respect to x. The derivative of sec(x) is sec(x)tan(x). So, the derivative of sec4(x) with respect to x is 4sec3(x) times sec(x)tan(x).
Final Derivative: Multiplying the derivatives together, we get the derivative of y with respect to x: dxdy=2×4sec3(x)×sec(x)tan(x).
Final Derivative: Multiplying the derivatives together, we get the derivative of y with respect to x: dxdy=2×4sec3(x)×sec(x)tan(x). Simplify the expression by combining like terms and constants: dxdy=8sec4(x)tan(x).
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