Solve for x
x\leq 4
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-2x\geq 1-9
Subtract 9 from both sides.
-2x\geq -8
Subtract 9 from 1 to get -8.
x\leq \frac{-8}{-2}
Divide both sides by -2. Since -2 is negative, the inequality direction is changed.
x\leq 4
Divide -8 by -2 to get 4.
Examples
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
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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.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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