Solve for a
a=x\left(xt^{2}-b\right)
\left(x\leq 0\text{ and }t<0\right)\text{ or }\left(x\geq 0\text{ and }t>0\right)
Solve for b
\left\{\begin{matrix}b=\frac{\left(tx\right)^{2}-a}{x}\text{, }&\left(x<0\text{ and }t<0\right)\text{ or }\left(x>0\text{ and }t>0\right)\\b\in \mathrm{R}\text{, }&x=0\text{ and }a=0\text{ and }t\neq 0\end{matrix}\right.
Solve for a (complex solution)
a=x\left(xt^{2}-b\right)
\left(x=0\text{ or }arg(tx)<\pi \right)\text{ and }t\neq 0
Solve for b (complex solution)
\left\{\begin{matrix}b=\frac{\left(tx\right)^{2}-a}{x}\text{, }&arg(tx)<\pi \text{ and }t\neq 0\text{ and }x\neq 0\\b\in \mathrm{C}\text{, }&a=0\text{ and }x=0\text{ and }t\neq 0\end{matrix}\right.
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xt=\sqrt{a+bx}
Multiply both sides of the equation by t.
\sqrt{a+bx}=xt
Swap sides so that all variable terms are on the left hand side.
a+bx=t^{2}x^{2}
Square both sides of the equation.
a+bx-bx=t^{2}x^{2}-bx
Subtract bx from both sides of the equation.
a=t^{2}x^{2}-bx
Subtracting bx from itself leaves 0.
a=x\left(xt^{2}-b\right)
Subtract bx from x^{2}t^{2}.
xt=\sqrt{a+bx}
Multiply both sides of the equation by t.
\sqrt{a+bx}=xt
Swap sides so that all variable terms are on the left hand side.
xb+a=t^{2}x^{2}
Square both sides of the equation.
xb+a-a=t^{2}x^{2}-a
Subtract a from both sides of the equation.
xb=t^{2}x^{2}-a
Subtracting a from itself leaves 0.
\frac{xb}{x}=\frac{t^{2}x^{2}-a}{x}
Divide both sides by x.
b=\frac{t^{2}x^{2}-a}{x}
Dividing by x undoes the multiplication by x.
b=xt^{2}-\frac{a}{x}
Divide x^{2}t^{2}-a by x.
Examples
Quadratic equation
{ 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}