HP 17bII manual Summation Function ∑, 176 12 The Equation Solver

Press , then enter the equation:



To do the calculation:

Keys:			Display:	Description:
I				Stores, verifies, and
				creates menu labels for

				the equation.
27500				Stores old salary.
2				Stores rating.
				Calculates new salary.
			

The Summation Function (∑)

The Σ function does summation calculations in an equation:

counter variable  starting value  ending value  step size  algebraic expression

The counter variable takes on a series of values, beginning with the starting value, and incrementing according to the step size, until it passes the ending value. For each value of the counter, the algebraic expression is evaluated, and the value is added to the previous value. The Σ function returns the final summation.

For example, when the equation:



is solved for SERIES, the counter I runs from 1 through 6 in steps of one─ that is, 1, 2, 3, 4, 5, 6. For each value I, the expression  is

176 12: The Equation Solver

File name : English-M02-1-040308(Print).doc Print data : 2004/3/9