Evaluate
-\frac{23}{2}=-11.5
Real Part
-\frac{23}{2} = -11\frac{1}{2} = -11.5
Share
Copied to clipboard
\left(\frac{1}{2}i\sqrt{46}\right)^{2}
Divide i\sqrt{46} by 2 to get \frac{1}{2}i\sqrt{46}.
\left(\frac{1}{2}i\right)^{2}\left(\sqrt{46}\right)^{2}
Expand \left(\frac{1}{2}i\sqrt{46}\right)^{2}.
-\frac{1}{4}\left(\sqrt{46}\right)^{2}
Calculate \frac{1}{2}i to the power of 2 and get -\frac{1}{4}.
-\frac{1}{4}\times 46
The square of \sqrt{46} is 46.
-\frac{23}{2}
Multiply -\frac{1}{4} and 46 to get -\frac{23}{2}.
Re(\left(\frac{1}{2}i\sqrt{46}\right)^{2})
Divide i\sqrt{46} by 2 to get \frac{1}{2}i\sqrt{46}.
Re(\left(\frac{1}{2}i\right)^{2}\left(\sqrt{46}\right)^{2})
Expand \left(\frac{1}{2}i\sqrt{46}\right)^{2}.
Re(-\frac{1}{4}\left(\sqrt{46}\right)^{2})
Calculate \frac{1}{2}i to the power of 2 and get -\frac{1}{4}.
Re(-\frac{1}{4}\times 46)
The square of \sqrt{46} is 46.
Re(-\frac{23}{2})
Multiply -\frac{1}{4} and 46 to get -\frac{23}{2}.
-\frac{23}{2}
The real part of -\frac{23}{2} is -\frac{23}{2}.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
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}