Solve for a (complex solution)
a=\frac{x^{2}+y^{2}}{4b}
b\neq 0\text{ and }x\neq -iy\text{ and }x\neq iy
Solve for b (complex solution)
b=\frac{x^{2}+y^{2}}{4a}
a\neq 0\text{ and }x\neq -iy\text{ and }x\neq iy
Solve for a
a=\frac{x^{2}+y^{2}}{4b}
b\neq 0\text{ and }\left(y\neq 0\text{ or }x\neq 0\right)
Solve for b
b=\frac{x^{2}+y^{2}}{4a}
a\neq 0\text{ and }\left(y\neq 0\text{ or }x\neq 0\right)
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x^{2}+y^{2}=4ab
Variable a cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by ab.
4ab=x^{2}+y^{2}
Swap sides so that all variable terms are on the left hand side.
4ba=x^{2}+y^{2}
The equation is in standard form.
\frac{4ba}{4b}=\frac{x^{2}+y^{2}}{4b}
Divide both sides by 4b.
a=\frac{x^{2}+y^{2}}{4b}
Dividing by 4b undoes the multiplication by 4b.
a=\frac{x^{2}+y^{2}}{4b}\text{, }a\neq 0
Variable a cannot be equal to 0.
x^{2}+y^{2}=4ab
Variable b cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by ab.
4ab=x^{2}+y^{2}
Swap sides so that all variable terms are on the left hand side.
\frac{4ab}{4a}=\frac{x^{2}+y^{2}}{4a}
Divide both sides by 4a.
b=\frac{x^{2}+y^{2}}{4a}
Dividing by 4a undoes the multiplication by 4a.
b=\frac{x^{2}+y^{2}}{4a}\text{, }b\neq 0
Variable b cannot be equal to 0.
x^{2}+y^{2}=4ab
Variable a cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by ab.
4ab=x^{2}+y^{2}
Swap sides so that all variable terms are on the left hand side.
4ba=x^{2}+y^{2}
The equation is in standard form.
\frac{4ba}{4b}=\frac{x^{2}+y^{2}}{4b}
Divide both sides by 4b.
a=\frac{x^{2}+y^{2}}{4b}
Dividing by 4b undoes the multiplication by 4b.
a=\frac{x^{2}+y^{2}}{4b}\text{, }a\neq 0
Variable a cannot be equal to 0.
x^{2}+y^{2}=4ab
Variable b cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by ab.
4ab=x^{2}+y^{2}
Swap sides so that all variable terms are on the left hand side.
\frac{4ab}{4a}=\frac{x^{2}+y^{2}}{4a}
Divide both sides by 4a.
b=\frac{x^{2}+y^{2}}{4a}
Dividing by 4a undoes the multiplication by 4a.
b=\frac{x^{2}+y^{2}}{4a}\text{, }b\neq 0
Variable b cannot be equal to 0.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}