- #1

nietschje

- 7

- 0

I'am new here and happy to find this great forum!

Here's my first question: there's an explicit function as follows:

y=2.sin(x)-1

The

**transformation**to polar form (r=3cos([itex]\theta[/itex]))

- x=r.cos([itex]\theta[/itex])

- y=r.sin([itex]\theta[/itex])

So I get: r.sin([itex]\theta[/itex])=2.sin(r.cos([itex]\theta[/itex]))-1

Now you see the problem: how can I

**isolate**r in this equation ?