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Let f:R to R be defined by f(x)={{:(2k...

Let `f:R to R` be defined by
`f(x)={{:(2k-2x",",ifxle-1),(2x+3",",iffxgt-1):}`
If f has a local minimum at x=-1, then a possible value of k is

A

`1`

B

0

C

`-(1)/(2)`

D

`-1`

Text Solution

Verified by Experts

The correct Answer is:
D
`becausek+2ge1`
`thereforek ge-1`
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