Evaluate
\frac{er}{784}
Differentiate w.r.t. r
\frac{e}{784}
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er\times \frac{1}{16}\times 7^{-2}
Calculate 4 to the power of -2 and get \frac{1}{16}.
er\times \frac{1}{16}\times \frac{1}{49}
Calculate 7 to the power of -2 and get \frac{1}{49}.
er\times \frac{1}{784}
Multiply \frac{1}{16} and \frac{1}{49} to get \frac{1}{784}.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Matrix
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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
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Limits
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