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Find the second derivative of the polynomial.\newlinef(x)=9x2f(x) = -9x^2\newlineWrite your answer as a polynomial in xx or as a constant. Simplify any fractions.\newlinef(x)=f''(x) = ______

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Q. Find the second derivative of the polynomial.\newlinef(x)=9x2f(x) = -9x^2\newlineWrite your answer as a polynomial in xx or as a constant. Simplify any fractions.\newlinef(x)=f''(x) = ______
  1. Find First Derivative: First, we need to find the first derivative of the polynomial f(x)=9x2f(x) = -9x^2. Using the power rule, which states that ddx[xn]=nxn1\frac{d}{dx}[x^n] = nx^{n-1}, we apply it here:\newlineddx[9x2]=9×2x21=18x\frac{d}{dx}[-9x^2] = -9 \times 2x^{2-1} = -18x
  2. Find Second Derivative: Next, we find the second derivative of the polynomial by differentiating 18x-18x. Again, using the power rule:\newlineddx[18x]=18×1x11=18\frac{d}{dx}[-18x] = -18 \times 1x^{1-1} = -18

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