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The least value of k for which (k-2)x^(2...

The least value of k for which `(k-2)x^(2)+8x+k+4gtsin^(-1)(sin12)+cos^(-1)(cos12)` for all `x in R` is

A

`-7`

B

`-5`

C

`-3`

D

5

Text Solution

Verified by Experts

The correct Answer is:
D
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AAKASH SERIES-INVERSET TRIGONOMETRIC FUNCTIONS-LECTURE SHEET (EXERCISE -III LEVEL -II (ADVANCED) SINGLE ANSWER TYPE QUESTIONS)6
  1. The least value of k for which (k-2)x^(2)+8x+k+4gtsin^(-1)(sin12)+cos^...

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