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For the following equation, evaluate 
f^(')(1).

f(x)=-3x^(5)+4x^(3)-2x
Answer:

For the following equation, evaluate f(1) f^{\prime}(1) .\newlinef(x)=3x5+4x32x f(x)=-3 x^{5}+4 x^{3}-2 x \newlineAnswer:

Full solution

Q. For the following equation, evaluate f(1) f^{\prime}(1) .\newlinef(x)=3x5+4x32x f(x)=-3 x^{5}+4 x^{3}-2 x \newlineAnswer:
  1. Apply Power Rule: To find the derivative of the function f(x)=3x5+4x32xf(x) = -3x^{5} + 4x^{3} - 2x, we will apply the power rule to each term separately. The power rule states that the derivative of xnx^n with respect to xx is nx(n1)n\cdot x^{(n-1)}.
  2. Derivative of 3x5-3x^{5}: First, we find the derivative of the term 3x5-3x^{5}. Using the power rule, we get:\newlineddx(3x5)=3×5×x51=15x4\frac{d}{dx}(-3x^{5}) = -3 \times 5 \times x^{5-1} = -15x^{4}.
  3. Derivative of 4x34x^{3}: Next, we find the derivative of the term 4x34x^{3}. Again, using the power rule, we get:\newline rac{d}{dx}(4x^{3}) = 4 \times 3 \times x^{3-1} = 12x^{2}.
  4. Derivative of 2x-2x: Finally, we find the derivative of the term 2x-2x. The power rule for the first power is simply the coefficient, so:\newlineddx(2x)=2\frac{d}{dx}(-2x) = -2.
  5. Combine Derivatives: Now, we combine the derivatives of each term to get the derivative of the entire function f(x)f(x):f(x)=15x4+12x22.f'(x) = -15x^{4} + 12x^{2} - 2.
  6. Evaluate f(1)f'(1): To evaluate f(1)f'(1), we substitute x=1x = 1 into the derivative:\newlinef(1)=15(1)4+12(1)22=15+122f'(1) = -15(1)^{4} + 12(1)^{2} - 2 = -15 + 12 - 2.
  7. Perform Arithmetic: Performing the arithmetic, we get: f(1)=15+122=5f'(1) = -15 + 12 - 2 = -5.

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