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The function f(x)=x^2+2x+5 is strictly i...

The function f(x)=`x^2+2x+5` is strictly increasing in the interval:
a)`(-1,infty)` b)`(-infty,-1)` c)`[-1,infty)` d)`(-infty,-1]`

A

`(-1,infty)`

B

`(-infty,-1)`

C

`[-1,infty)`

D

`(-infty,-1]`

Text Solution

Verified by Experts

The correct Answer is:
A
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