Evaluate
\frac{7a}{12}
Differentiate w.r.t. a
\frac{7}{12} = 0.5833333333333334
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\frac{7\times 9a}{18\times 6}
Divide \frac{7}{18} by \frac{6}{9a} by multiplying \frac{7}{18} by the reciprocal of \frac{6}{9a}.
\frac{7a}{2\times 6}
Cancel out 9 in both numerator and denominator.
\frac{7a}{12}
Multiply 2 and 6 to get 12.
Examples
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y = 3x + 4
Arithmetic
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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.
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}