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If f R to R is defined by <by> f (x) ...

If ` f R to R ` is defined by ` f (x) = {{:(( 2 sin x - sin 2x)/(2x cos x ) " if " x ne 0) , ( alpha " for " x =0 ):}` then the value of ` alpha so that f is continuous at 0 is

A

2

B

1

C

-1

D

0

Text Solution

Verified by Experts

The correct Answer is:
D
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