Identify Function and Point: Step 1: Identify the function and the point of interest.We have the function f(x)=2tan(x) and we need to find its derivative at x=4π.
Apply Chain Rule: Step 2: Use the chain rule to differentiate f(x).f′(x)=2tan(x)⋅ln(2)⋅sec2(x)
Substitute x Value: Step 3: Substitute x=4π into the derivative.f′(4π)=2tan(4π)⋅ln(2)⋅sec2(4π)
Calculate Trigonometric Functions: Step 4: Calculate tan(π/4) and sec2(π/4).tan(π/4)=1, sec(π/4)=2, so sec2(π/4)=2.
Final Derivative Calculation: Step 5: Substitute these values into the derivative.f′(4π)=21×ln(2)×2=2×ln(2)×2=4ln(2)
More problems from Evaluate expression when two complex numbers are given