Find the derivative of f(x) = x^{2} + 3x at

Travis Fogle 2021-11-19 Answered
Find the derivative of f(x)=x2+3x at x. That is, find f′(x).
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Expert Answer

Harr1957
Answered 2021-11-20 Author has 18 answers
Step 1
We have to find the derivative of f(x) at x :
f(x)=x2+3x
We will use following formula, for derivatives,
df(x)dx=f(x)
daxndx=anxn1
dxdx=1
Step 2
So finding derivative with respect to 'x', we get
df(x)dx=d(x2+3x)dx
f(x)=dx2dx+3dxdx
=2x21+3×1
=2x+3
Hence, value of f'(x) is 2x+3.
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