Apply Power Rule: To find the derivative of the function 3z5+cos(z) with respect to z, we need to apply the power rule to the term 3z5 and the derivative of the cosine function to the term cos(z).
Derivative of 3z5: The power rule states that the derivative of zn with respect to z is n∗z(n−1). Applying this to 3z5, we get the derivative as 5∗3z(5−1)=15z4.
Derivative of cos(z): The derivative of cos(z) with respect to z is −sin(z). Therefore, the derivative of cos(z) is −sin(z).
Combine Derivatives: Combining the derivatives of both terms, we get the derivative of the entire function as 15z4−sin(z).
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