Question

Is f(x)=2x3+2x2+2x+1x−3 increasing or decreasing at x=2?

Answer 1

Answer:

f(x)=2x³+2x²+2x+1x−3

X=2

F(2)=2x8+2x4+2x2+2-3

=16+8+4+2-3

=27

Therefore it is increasing

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Answer 2

decreasing because

3×2+2×2=10

2x+1x-3=0

2x+1x=3

3x=3

x=3/3

x=0