Solve for x
x=\frac{\theta ^{2}}{9}
\theta \geq 0
Solve for x (complex solution)
x=\frac{\theta ^{2}}{9}
arg(\theta )<\pi \text{ or }\theta =0
Solve for θ
\theta =3\sqrt{x}
x\geq 0
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3\sqrt{x}=\theta
Swap sides so that all variable terms are on the left hand side.
\frac{3\sqrt{x}}{3}=\frac{\theta }{3}
Divide both sides by 3.
\sqrt{x}=\frac{\theta }{3}
Dividing by 3 undoes the multiplication by 3.
x=\frac{\theta ^{2}}{9}
Square both sides of the equation.
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