English | Español

# Try our Free Online Math Solver!

Online Math Solver

 Depdendent Variable

 Number of equations to solve: 23456789
 Equ. #1:
 Equ. #2:

 Equ. #3:

 Equ. #4:

 Equ. #5:

 Equ. #6:

 Equ. #7:

 Equ. #8:

 Equ. #9:

 Solve for:

 Dependent Variable

 Number of inequalities to solve: 23456789
 Ineq. #1:
 Ineq. #2:

 Ineq. #3:

 Ineq. #4:

 Ineq. #5:

 Ineq. #6:

 Ineq. #7:

 Ineq. #8:

 Ineq. #9:

 Solve for:

 Please use this form if you would like to have this math solver on your website, free of charge. Name: Email: Your Website: Msg:

# ALGEBRA FORMULA SUMMARY

Lines

Slope of line through (x1, y1) and (x2, y2):

Point- slope equation of line through (x1, y1) with slope m:

y - y1 = m(x - x1)

Slope - intercept equation of line with slope m and y-intercept b:

y = b + mx

Definition of Zero , Negative , and Fractional Exponents

and, in general,
and, in general, a
Also,

Rules of Exponents

1. For example,

2.For example,

3. For example,

Definition of Natural Log

y = ln x means ey = x, for example: ln1 = 0, since e0 = 1.

Rules of Natural Logarithms

ln(AB) = lnA + lnB

= lnA - lnB

lnAp = p lnA

Identities

Exam 1

• Interest compounded annually :

• Interest compounded continuously :

• Profit = Revenue - Cost

• Revenue = (price)×( number sold )

Exponential Growth : where k > 0

Exponential Decay : where k < 0

 Prev Next