Let f(x)=a bsinx+bsqrt(1-a^2)cosx+c , wh...

Let `f(x)=a bsinx+bsqrt(1-a^2)cosx+c ,` where `|a|<<1,b>>0` then (a) c-b,c+b (b) difference of maximum and minimum values of `f(x)` is `2b` (c) `f(x)=c` if x=`-cos^(-1)a` (d)`f(x)=c` if x=`cos^(-1)a`

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