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(Solved): 7. (a) Find the derivative \( y^{\prime} \) using the derivative rules: \( y=\cos ^{-1}(4 x) \). (b ...



7. (a) Find the derivative \( y^{\prime} \) using the derivative rules: \( y=\cos ^{-1}(4 x) \). (b) Find the derivative of \
7. (a) Find the derivative \( y^{\prime} \) using the derivative rules: \( y=\cos ^{-1}(4 x) \). (b) Find the derivative of \( y=x^{5 x} \).


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The concept used: Derivative rules. i) Derivative of cosine inverse function: ddx(cos?1x)=?11?x2 ii) ddx(xn)=n×xn?1: power rule of derivatives. iii) d
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