Identify Functions: We are asked to find the derivative of the function f(x)=100−x2 with respect to x. We will use the chain rule, which states that the derivative of a composite function is the derivative of the outer function evaluated at the inner function times the derivative of the inner function.
Find Derivatives: First, let's identify the outer function and the inner function. The outer function is g(u)=u, and the inner function is u(x)=100−x2. We will need to find g′(u) and u′(x).
Apply Chain Rule: The derivative of the outer function g(u)=u with respect to u is g′(u)=2u1.
Calculate Derivative: The derivative of the inner function u(x)=100−x2 with respect to x is u′(x)=−2x.
Simplify Expression: Now, we apply the chain rule. The derivative of f(x) with respect to x is f′(x)=g′(u(x))⋅u′(x). Substituting the derivatives we found, we get f′(x)=2100−x21⋅(−2x).
Final Derivative: Simplify the expression by multiplying the two derivatives together. f′(x)=2100−x2−2x.
Final Derivative: Simplify the expression by multiplying the two derivatives together. f′(x)=−2x/(2100−x2).We can simplify the expression further by canceling out the 2 in the numerator and the denominator. f′(x)=−x/100−x2.
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