Sharp EL-5230, EL-5250 operation manual A˚B=C˚D D=z

Chapter 3: Scientific Calculations

Solving an equation

Example

Try finding the variables in the equation below.

A ⋅ B = C ⋅ D

1. Press b0to select the NORMAL mode.

2.	Press ;A k;B ;	NORMAL MODE
	=;C k;D.		0.
• You must enter the whole equation.		A˚B=C˚D_
3.	Press I5.
•	The calculator automatically calls the	A˚B=C˚D
	display for entering variables and	A=z	0.
	displays the variables in alphabetical

order.

• indicates that there are more variables.

•If a variable already has a value, the calculator displays that value automatically.

4.	Press 10 e.	A˚B=C˚D
•	Enters a value for known variable A.
• The cursor moves onto the next		B=z	0.
	variable.
5. Press 5 e.
•	Enters a value for known variable B.	A˚B=C˚D
		C=z	0.

6.Press 2.5 e.

•Enters a value for known variable C.

•The cursor moves onto the next variable. indicates that this is the last variable.

A˚B=C˚D

D=z 0.

7.Press @h.

•After showing the ‘calculating!’ display, the calculator finds the value for the unknown variable that was indicated by the cursor.

D=	20.
R¬	50.
L¬	50.

Values of the left-hand side of the equation

Values of the right-hand side of the equation

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