Chapter 7 Flashcards
(11 cards)
1
Q
What is a = b^c in logarithmic form?
A
c = logba.
2
Q
What is the value of the logarithm of a negative number or zero?
A
Non-real number.
3
Q
What is log10x the same as?
A
Log x.
4
Q
What is logex the same as?
A
Ln x.
5
Q
What are the two cancellation principles?
A
loga(a^x) = x
a^(loga x) = x
6
Q
What is loga(x/y) equal to?
A
Loga x - loga y.
7
Q
What is loga x^k equal to?
A
k loga x.
8
Q
What is loga a when a>0?
A
1.
9
Q
What is loga 1?
A
0.
10
Q
How do you solve an equation with an unknown in the power?
A
Take logarithms of both sides.
11
Q
How else can you use logarithms?
A
Disguised quadratics.
