Question Function Find the first partial derivative with respect to k Find the first partial derivative with respect to s ∂k∂f=−s Simplify f=−ksFind the first partial derivative by treating the variable s as a constant and differentiating with respect to k ∂k∂f=∂k∂(−ks)Use differentiation rule ∂x∂(cf(x))=c×∂x∂(f(x)) ∂k∂f=−s×∂k∂(k)Use ∂x∂xn=nxn−1 to find derivative ∂k∂f=−s×1Solution ∂k∂f=−s Show Solution Solve the equation Solve for k Solve for s k=−sf Evaluate f=−ksRewrite the expression f=−skSwap the sides of the equation −sk=fDivide both sides −s−sk=−sfDivide the numbers k=−sfSolution k=−sf Show Solution