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## Question with rewriting or solving of isolating a variable on left side of equation. How can one re-write the equation with only theta on the left. I need to calculate theta when Q is known.

Will this be possible? Q is a ratio variable that rages between 0 and 1 and will be known from previous calculations. I know when Q=0.5 the Theta = PI and when Q=1 then Theta = 2*PI

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## Re: Question with rewriting or solving of isolating a variable on left side of equation.

Normally you should attach a worksheet with your problem... Prime 4 sheet attached.

Success!
Luc

7 REPLIES 7

## Re: Question with rewriting or solving of isolating a variable on left side of equation.

Normally you should attach a worksheet with your problem... Prime 4 sheet attached.

Success!
Luc

## Re: Question with rewriting or solving of isolating a variable on left side of equation.

Thank you for your response Luc.

I have been trying to solve it symbolically, so that one can get an answer without computational input.

Can you please just indicate why it cant be solved symbolically? (If Q is known)

## Re: Question with rewriting or solving of isolating a variable on left side of equation.

The answer is one or two or three values depend on Q.

## Re: Question with rewriting or solving of isolating a variable on left side of equation.

@ttokoro wrote:

The answer is one or two or three values depend on Q.

No, as it was stated, that Q is only in the range from 0 to 1!

## Re: Question with rewriting or solving of isolating a variable on left side of equation.

@Jan3 wrote:

Thank you for your response Luc.

I have been trying to solve it symbolically, so that one can get an answer without computational input.

Can you please just indicate why it cant be solved symbolically? (If Q is known)

Thats a mathematical limitation. An equation like yours can't be solve for theta analytically. You have to resort to numerical methods.

## Re: Question with rewriting or solving of isolating a variable on left side of equation. Q=1

## Re: Question with rewriting or solving of isolating a variable on left side of equation.

OK, to make it unique we have to limit Q in (0, 1] and theta in (0, 2pi)

Q=0 could only be achieved as limit q-> 0

theta=0 has to be excluded as it means a divison by  zero and

theta=2 pi is excluded as otherwise theta(1) would have two solutions. 