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(d)/(dx)×sqrt(100-x^(2))

ddx×100x2 \frac{d}{d x} \times \sqrt{100-x^{2}}

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Q. ddx×100x2 \frac{d}{d x} \times \sqrt{100-x^{2}}
  1. Identify Functions: We are asked to find the derivative of the function f(x)=100x2f(x) = \sqrt{100-x^2} with respect to xx. 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.
  2. Find Derivatives: First, let's identify the outer function and the inner function. The outer function is g(u)=ug(u) = \sqrt{u}, and the inner function is u(x)=100x2u(x) = 100 - x^2. We will need to find g(u)g'(u) and u(x)u'(x).
  3. Apply Chain Rule: The derivative of the outer function g(u)=ug(u) = \sqrt{u} with respect to uu is g(u)=12ug'(u) = \frac{1}{2\sqrt{u}}.
  4. Calculate Derivative: The derivative of the inner function u(x)=100x2u(x) = 100 - x^2 with respect to xx is u(x)=2xu'(x) = -2x.
  5. Simplify Expression: Now, we apply the chain rule. The derivative of f(x)f(x) with respect to xx is f(x)=g(u(x))u(x)f'(x) = g'(u(x)) \cdot u'(x). Substituting the derivatives we found, we get f(x)=12100x2(2x)f'(x) = \frac{1}{2\sqrt{100-x^2}} \cdot (-2x).
  6. Final Derivative: Simplify the expression by multiplying the two derivatives together. f(x)=2x2100x2f'(x) = \frac{-2x}{2\sqrt{100-x^2}}.
  7. Final Derivative: Simplify the expression by multiplying the two derivatives together. f(x)=2x/(2100x2)f'(x) = -2x / (2\sqrt{100-x^2}).We can simplify the expression further by canceling out the 22 in the numerator and the denominator. f(x)=x/100x2f'(x) = -x / \sqrt{100-x^2}.

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