Q. For the following equation, find f′(x).f(x)=−4x5+8x4−4x3−x2−6xAnswer: f′(x)=
Apply Power Rule: To find the derivative f′(x) of the function f(x)=−4x5+8x4−4x3−x2−6x, we will apply the power rule to each term individually. The power rule states that the derivative of xn with respect to x is n∗xn−1.
Derivative of −4x5: First, we find the derivative of the term −4x5. Using the power rule, we get:dxd(−4x5)=−4×5×x5−1=−20x4.
Derivative of 8x4: Next, we find the derivative of the term 8x4. Using the power rule, we get:rac{d}{dx}(8x^{4}) = 8 \cdot 4 \cdot x^{4-1} = 32x^{3}.
Derivative of −4x3: Now, we find the derivative of the term −4x3. Using the power rule, we get:dxd(−4x3)=−4×3×x3−1=−12x2.
Derivative of −x2: Then, we find the derivative of the term −x2. Using the power rule, we get:dxd(−x2)=−1×2×x2−1=−2x.
Derivative of −6x: Finally, we find the derivative of the term −6x. Since this is a linear term, its derivative is simply the coefficient of x:dxd(−6x)=−6.
Combine Derivatives: Combining all the derivatives we've calculated, we get the derivative of the entire function f(x):f′(x)=−20x4+32x3−12x2−2x−6.
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