If f : R \to R is defined by f(x)=\{ \table { 2 \sin x - \sin 2 x } /{ 2 x \cos x } ,{ if },x \neq 0;\alpha,if,x=0 then the value of \alpha so that is continuous at x = 0 isf' is continuous at x = 0 is

AP and TS EAMCET Engineering Model Paper 9

Question : 32 of 160

Marks: +1, -0

If f:R→R is defined by f(x)={

2‌sin‌x−sin‌2‌x

2x‌cos‌x

x≠0

x=0

then the value of α so that ′f′ is continuous at x = 0 is

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