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|x+1 x–1; x²+x+1 x²–x+1| is equal to :
The derivative of sin (x²) w.r.t. x, at x = √π is :
Check whether the function f(x) = x² |x| is differentiable at x = 0 or not.
If y = √(tan √x), prove that √x (dy/dx) = (1 + y⁴)/(4y).
The derivative of tan⁻¹(x²) w.r.t. x is :
If f(x) = |tan 2x|, then find the value of f′(x) at x = π/3.
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