MCQ
$\int\limits_0^{0.9} {[ - 2[x]]\,dx,} $ મેળવો . ( કે જ્યાં $[.]$ એ મહતમ પૃણાંક વિધેય છે )
- A$0.9$
- B$1.8$
- C$-0.9$
- D$0$
$\therefore \int\limits_0^{0.9} {\left[ {x - 2\left[ x \right]} \right]} dx = 0$
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$ 11 x+y+\lambda z=-5 $
$ 2 x+3 y+5 z=3 $
$ 8 x-19 y-39 z=\mu$
ને અસંખ્ય ઉકેલો હોય, તો $\lambda^4-\mu=$.............