1
Q
to solve a log…
A
set equal to x and flip
2
Q
to solve and exponential equation…
A
flip into a log and solve
3
Q
lne = …
A
cancels out
4
Q
to expand
A
change multiplication into addition and divison into subtraction Exponents go in front
5
Q
to condense
A
addition becomes multiplication, subtraction becomes division. Numbers in front become exponents.
6
Q
change of base log7(5)
A
log5/log7
7
Q
when solving for x (exp) remember…
A
put ln on each side and flip exponents in front
8
Q
when solving lnx …
A
flip into e and solve
9
Q
negatives…
A
cant be x
10
Q
half lives
A
y=ae ^bx
11
Q
compound interest
A
a=p(1+r/n)^n x t
12
Q
continuous compounded interest
A
a=pe^r x t
Precalculus
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