Kenyon College
[email protected]
Math 112
Homework 1 Solutions
Section 4.2
4.2 #60:
tan(3x)
3 sec2 (3x)
= lim
=3
x0 ln(1 + x)
x0 (1 + x)1
lim
4.2 #66:
ex 1
ex
1 x ex
= lim
= lim
= 1
lim
x0 sin x
x0 cos x
x0 1 cos x
4.2 #68:
lim x2 ex
x
2 /2
= lim
x2
2
x