\left[-\frac{\pi }{2},\:\frac{\pi }{2}\right]
You asked:
Evaluate the interval $\left[- \frac{\pi}{2}, \frac{\pi}{2}\right]$, and display the results on a number line.
MathBot Answer:
The expression $\left[- \frac{\pi}{2}, \frac{\pi}{2}\right]$ is already fully evaluated.