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Define a function h : [0, 1] ? [-1, 1] as h(x) = sin p( (2x ^2-1)/2 ). Using Inverse function Theorem, find d/dx(h inverse) at x = 0 , x =v-1/ 2. Hint: Show that h(x) is a bijective function.

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6 years ago bharat bajaj
IIT Delhi
122 Points
```							As x belongs to [0,1], (2x^2 - 1)/2 goes from [-1,1].Take f(x) = f(y) for some x,y in domain,sin pi(2x^2-1/2) =sin p(2y^2-1/2)It implies that 2x^2 - 1 / 2 = 2y^2 - 1 / 2THerefore, x = yAlso, for all b in range, there is some a in the domain.Hence, h(x) is a bijective function.d/dx h^-1(x) = 1/ (d/dx h(x) ) = pi(2x)/ cos pi(2x^2-1/2)At x=0,Answer = 0At x=-1/v2Answer = -v2 piThanksBharat bajajIIT Delhiaskiitians faculty
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6 years ago
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