\frac { d x } { x } x ^ { 2 } = 2 x
Solve for d
d=\frac{2}{x}
x\neq 0
Solve for x
x=\frac{2}{d}
d\neq 0
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dxx^{2}=2xx
Multiply both sides of the equation by x.
dxx^{2}=2x^{2}
Multiply x and x to get x^{2}.
dx^{3}=2x^{2}
To multiply powers of the same base, add their exponents. Add 1 and 2 to get 3.
x^{3}d=2x^{2}
The equation is in standard form.
\frac{x^{3}d}{x^{3}}=\frac{2x^{2}}{x^{3}}
Divide both sides by x^{3}.
d=\frac{2x^{2}}{x^{3}}
Dividing by x^{3} undoes the multiplication by x^{3}.
d=\frac{2}{x}
Divide 2x^{2} by x^{3}.
Examples
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Linear equation
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
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Integration
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Limits
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