2.9.2 Usual infixed functions on reals : +,-,*,/,^
+,-,*,/,^ are the usual operators to do
additions, substractions, multiplications, divisions and for raising to a
You may use the square key or the cube key if your keyboard has one,
for example : 32 returns 9.
Remark on non integral powers
If x is not an integer, then ax=exp(x ln(a)), hence
ax is well-defined only for a>0 if x is not rational. If x
is rational and a<0, the principal determination of the logarithm
is used, leading to a complex number.
- Hence be aware of the difference between (a)1/n and a1/n
when n is an odd integer.
For example, to draw the graph of y=∛x3−x2, input :
You might also input :
but this is much slower and much less accurate.