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Let `[x]` denote the greatest integer less than or equal to `x` . If `f(x)=sin^(-1)x ,\ \ g(x)=[x^2]` and `h(x)=2x ,\ \ 1/2lt=xlt=1/(sqrt(2))` , then `fogoh\ (x)\ =\ pi//2` (b) `fogoh\ (x)=\ \ pi` (c) `hofog\ =\ \ hogof` (d) `hofog\ \ !=hogof`

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