Find the inverse
f(x)=3x+2
f-1(x)= (x-2)/3
Find the common ration of this geometric sequence
1,-2,4,-8
common ratio is 2
x2-6x+9=0
x=3
How much does 'e' equal in a logarithm equation
2.718
f(x)=x3-2
f-1(x)=^3 square root x+2
Find the common difference in the arithmetic sequence
-6,3,12,21
common difference is 9
Find the solutions
y=x2+2x+9
y=-x+7
y1=(-2,9)
y2=(-1,8)
Expand the logarithm
log5 (2/3)
log5 2- log5 3
Find the inverse
f(x)=(1/2)x+6
f-1(x)= -log2 (x-6)
Predict the next 3 numbers in the pattern
11,13,15,17,19,?,?,?
21,23,25
Solve for x
5/(x+3) - 1/(x+5) = 1/(x2+8x+15)
x= - 23/4
Expand the expression
ln(7x2)
ln7+ 2ln(x)
Find the inverse
y=log3(8x)
y=(1/8)3x
Find the mean
26,14,23,35,52,36,42,68,49,32,50,56,68,43
mean=42.4
Factor the expression
3x2-3x-60
3(x+4)(x-5)
Change of Base Formula
ln21
log21/loge
ln21=3.045
Inverse the ordered pairs
f=(-1,-1),(8,8),(2,5),(5,2)
f-1= (-1,-1),(8,8),(5,2),(2,5)
Write in standard form
5w-w6+0.4w3-10.5
-w6+0.4w3+5w-10.5
Multiply
(7-9i)(7+9i)
130
Write in logarithmic form
y=17x
log17 y=x