JEE Main 2019 — Math solution | Fundamenthol

JEE Main2019Math

Q.

If $cos x \frac{d y}{d x} - y sin x = 6 x, (0 < x < \frac{π}{2})$ and $y (\frac{π}{3}) = 0$ , then $y (\frac{π}{6})$ is equal to :

A
$- \frac{π ^{2}}{2}$
B
$- \frac{π ^{2}}{4 3}$
C
$\frac{π ^{2}}{2 3}$
D
$- \frac{π ^{2}}{2 3}$

Solution

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