Question
Find $\frac{d y}{d x}$ if
x = a(1 – cos θ), y = b(θ – sin θ)
x = a(1 – cos θ), y = b(θ – sin θ)
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$y = a +\frac{b}{x} ; x \frac{d^2 y}{d x^2}+2 \frac{d y}{d x}=0$
$+x^2-2$. It is known that $a=-1$. Find the value of $b$.