MCQ
$\int\limits_0^1 {\sqrt {\frac{{1 - x}}{{1 + x}}} \,\,dx =\ .........} $
- A$\frac{\pi }{2} + 1$
- ✓$\frac{\pi }{2} - 1$
- C$-1$
- D$1$
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$2 x+y-z=5$
$2 x-5 y+\lambda z=\mu$
$x+2 y-5 z=7$
ને અસંખ્ય ઉકેલો હોય,તો
$(\lambda+\mu)^2+(\lambda-\mu)^2=........$