- #1

chwala

Gold Member

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## Homework Statement

Solve and obtain an expression for x in terms of θ given ## (3+ cos 2θ) dx/dθ = x sin 2θ##

## Homework Equations

## The Attempt at a Solution

.....##dx/x = ((sin 2θ)/(3+ cos 2θ))dθ## ,

let ##u = (3+cos 2θ)⇒ du/dθ= -2 sin 2θ##

thus

##∫dx/x = -1/2∫du/u ##...........[/B]are my steps correct?i can solve from here