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If f,\ g,\ h are real functions given by...

If `f,\ g,\ h` are real functions given by `f(x)=x^2,g\ (x)=tanx\ a n d\ h(x)=log,\ x ,\ t h e n` write the value of `(hog\ of)(sqrt(pi/4))dot`

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`(h@g@f)(sqrt(frac{pi}{4}))=h(g(f(frac{pi}{4})))`
`=h(g((frac{pi}{4})^2))`
`=h(g(frac{pi}{4}))`
`=h(tan(frac{pi}{4}))`
`=h(1)`
`=log_(e)1=0`
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