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(a) Let f,g : R to R be defined as f(x) ...

(a) Let f,g : `R to R` be defined as f(x) `=2x -|x|` and g(x) `=2x + |x|`. Find fog.
(b) Prove that `lim_(theta to 0) (sin theta)/theta =1`

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The correct Answer is:
(a) `f(3x) =3x`
(b) `lim_(theta to 0) (sin theta)/theta =1`
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