MCQ
$\int_{}^{} {\frac{{dx}}{{{{\sin }^2}x{{\cos }^2}x}} = } $
  • A
    $\tan x + \cot x + c$
  • B
    $\cot x - \tan x + c$
  • $\tan x - \cot x + c$
  • D
    None of these

Answer

Correct option: C.
$\tan x - \cot x + c$
c
(c)$\int_{}^{} {\frac{{dx}}{{{{\sin }^2}x{{\cos }^2}x}}} = \int_{}^{} {\frac{{({{\cos }^2}x + {{\sin }^2}x)\,dx}}{{{{\cos }^2}x{{\sin }^2}x}}} $
$ = \int_{}^{} {{\rm{cose}}{{\rm{c}}^2}x\,dx} + \int_{}^{} {{{\sec }^2}x\,dx} = - \cot x + \tan x + c$.

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