Q. Calculate the derivative of f(x)=sinh(x7).(Use symbolic notation and fractions where needed.)
Identify Functions: Identify the outer function and the inner function for the chain rule.The outer function is sinh(u), and the inner function is u=x7. We will apply the chain rule which states that if f(x)=g(h(x)), then f′(x)=g′(h(x))⋅h′(x).
Differentiate Outer Function: Differentiate the outer function with respect to the inner function.The derivative of sinh(u) with respect to u is cosh(u). So, if we let u=x7, then the derivative of sinh(u) is cosh(x7).
Differentiate Inner Function: Differentiate the inner function with respect to x. The derivative of x7 with respect to x is 7x6.
Apply Chain Rule: Apply the chain rule by multiplying the derivatives from Step 2 and Step 3.The derivative of f(x) with respect to x is the product of the derivative of the outer function and the derivative of the inner function. Therefore, f′(x)=cosh(x7)×7x6.
Write Final Answer: Write the final answer using symbolic notation.f′(x)=7x6⋅cosh(x7).
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