1 Flashcards
PV
PV=PMT[1-(1+i)^0n] / i
PMT
PMT = i(pv) / [1-(1+i)^-n]
i
quoted interest / total payment periods (n)
x^-a becomes…
1/x^a
(x/y)^-a
(y/x)^a
x^0
1
(4x^3)^3
Circumference of circlce
C=2(pi)(r)
Area of circle
A=pi(r^2)
1in is how many cm?
2.54
Semi Monthly
monthly(12) / 24
Bi weekly
Monthly(12)/26
Accelerated Biweekly
Monthly(13)/26
Weekly
Monthly(12)/ 52
Accelerated weekly
monthly / 4
30mL is how many Fl. Oz
1 fl oz
The variable is the exponent whats the rule??
It will always be common base elimination, we dont have log OR desmos so it will be that in any situation where the exponent is the variable, regardless of if its financial or half life or whatever.
we had to solve for a unknown interest rate, now that we have it as i = decimal what do we do???
decimal(100)= interest % this will make sure we dont mess it up, the result is an amazing heuristic for determining if we screwed up the interest rate calc
we have our rise/run for equation of a line now what
use a given point on our line such as (1,5) and plug it in with our slope (4)
y=mx+b
5=2(1)+b
5=2+b
5-2=2-2+b
3=b
y=2x+3
Whats first differences
first differences are numbers that represent the difference between the 2 y points on 2 sequential x points for example
(3,6)
(4,8)
(5,10)
we clearly see a constant first difference of 2, this is basically its rise/run value
we need to do percentile for the list 1,2,3,4,5,6,7,8,9,10,11,12,13,14 the value we need to calculate the percentile of is 10…………what will the formula look like
we need to do percentile for the list 1,2,3,4,5,6,7,8,9,10,11,12,13,14 but our value we need to add to the list and find the percentile, this number is 10…………what will the formula look like
sinx=53
