Q. For the following equation, find f′(x).f(x)=7x5−6x4+4x3+5Answer: f′(x)=
Apply Power Rule: To find the derivative of the function f(x)=7x5−6x4+4x3+5, we will apply the power rule to each term separately. The power rule states that the derivative of xn with respect to x is n⋅x(n−1).
Derivative of 7x5: First, we find the derivative of the term 7x5. Using the power rule, we get:(d)/(dx)(7x5)=7×5×x5−1=35x4.
Derivative of −6x4: Next, we find the derivative of the term −6x4. Again, using the power rule, we get:dxd(−6x4)=−6×4×x4−1=−24x3.
Derivative of 4x3: Then, we find the derivative of the term 4x3. Using the power rule, we get:rac{d}{dx}(4x^{3}) = 4 \cdot 3 \cdot x^{3-1} = 12x^{2}.
Derivative of constant: Finally, the derivative of a constant is zero, so the derivative of the term +5 is:dxd(5)=0.
Combine all derivatives: Now, we combine the derivatives of all the terms to find the derivative of the entire function f(x):f′(x)=35x4−24x3+12x2+0.
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