math 3
A
a
b
c
x
x
5
3
x
y
x
y
1
y
x
y
x
x
x
y
x
x
3
x
2
4
123
456
N[123/456, 39]
$0.269736842105263157894736842105263157894\ldots$
evalf(123/456, 39);
0.269736842105263157894
736842105263157894
&obar;
..
π ⅇ ⅇ ⅈ ⅈ γ ∞ &infty; &true; &false; &NotANumber; &NaN;
1
x