c# - How do I use Ncalc.Expression to solve for y? -

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i want input string:

"pow(y,2) = 4 - pow(x,2)" (in other words, y^2=4-x^2)

and make "x" = 1, have evaluate , give me value of y. how do this?

so want solve equation y given number x? means 'y' function of x, so: 

var y = new expression("sqrt(4 - pow(x, 2))"); // y = sqrt(4 - x^2) e.parameters["x"] = 1;  var x = y.evaluate();

wouldn't solve problem? (other square root of plus/minus something, you'd hav add logic)


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