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If y=(1+x^(1/4))(1+x^(1/2))(1-x^(1/4)) ,...

If `y=(1+x^(1/4))(1+x^(1/2))(1-x^(1/4))` , then find `(dy)/(dx)dot`

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`y=(1+x^(1//4))(1+x^(1//2))(1-x^(1//4))`
`=(1+x^(1//4))(1-x^(1//4))(1+x^(1//2))`
`=(1-x^(1//2))(1+x^(1//2))`
`=1-x`
`therefore" "(dy)/(dx)=-1`
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