Entering Equations

• Equations must have an equals sign and use the correct variable names:

  y = 5x+2 will be incorrect if the answer is w = 5y+2

• Examples of valid equations that are equivalent:

  32 = 5*x + 2 is the same as 30 = 5x or x = 6

  y = (x-1)^2 + 3 is the same as y - 3 = (x-1)^2

  x^2 + xy + y^2 = 13x is the same as y*(y+x) = 13x - x^2

• If there is no equation that solves the question:

  Enter NONE or DNE (this may vary from problem to problem).

• Examples of constants used in equations:

  pi, e = e^1

• Functions may be used in equations, but may not be applied across the equals sign:

  sqrt(x) = sqrt(5) is valid, but sqrt(x=5) is not

• Link to a list of all available functions