MCQ
In an LPP, the objective function is always
- ANon-linear
- ✓Linear
- CQuadratic
- DCubic
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($\sin 3 \theta ) x - y + z = 0$
($\cos 2 \theta ) x + 4 y + 3 z = 0$
$2 x + 7 y + 7 z = 0$
then the number of principal values of $\theta$ is