Regression and Basic Exponentials Flashcards
1
Q
a>0
b>1
A
increasing
concave up
2
Q
a>0
0<b<1
A
decreasing
concave up
3
Q
a<0
b>1
A
decreasing
concave down
4
Q
a<0
0<b<1
A
increasing
concave down
5
Q
y=a (b)^x local or global extrema?
A
no local or global extrema
6
Q
HA? y=a (b)^x
A
y=0
7
Q
R & D? y=a (b)^x
A
R: y<0 or y>0
D: All real #
8
Q
if a>0
A
Graph is concave up
R: y>0
9
Q
Banking Equation
A
A = P(1+r/n) ^ n(t)
10
Q
Continuous Compounding
A
A = Pe^r(t)
11
Q
Doubling Time
A
A=P(2) ^ t/d
12
Q
A?
A
Final Amount
13
Q
P?
A
Initial Amount
14
Q
t?
A
time in years
15
Q
n?
A
of compounding periods
- monthly = 12
- daily = 365
quarterly = 4
