Log Rules Flashcards
1
Q
log(ab)
A
log(a) + log(b)
2
Q
log(a/b)
A
log(a) - log(b)
3
Q
log(a^n)
A
n * log(a)
4
Q
log(base “a”) (a)
A
1
5
Q
log(base “a”) (1)
A
0
6
Q
natural log = ln(x)
A
log(base “e”) (x)
7
Q
log(base10) (x) is written as…
A
log(x)
8
Q
log(10)
A
1
9
Q
log(1)
A
0
10
Q
write 2^x = 16 in log form
A
log (base 2) (16) = x
11
Q
log(base2)(16) = x in words
A
What power do I need to raise 2 to in order to get 16? I’ll set that power as equal to x.
12
Q
write log(base3) (81) in exponent form
A
3^x = 81
