Evaluate
\frac{128\pi }{25}\approx 16.084954386
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4\pi \times 64\times 0.02
Calculate 8 to the power of 2 and get 64.
256\pi \times 0.02
Multiply 4 and 64 to get 256.
5.12\pi
Multiply 256 and 0.02 to get 5.12.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
y = 3x + 4
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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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}