Jumping to find roots – Sharp EL-9900 User Manual
Page 33
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Basic Keyboard/ALGEBRA USING THE SHARP EL-9900
Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only.
1.
Press Y= CL to return to and clear the Y1 prompt.
2.
To enter the polynomial y = –5x
2
–3x + 1, press (–)
5
x
x
2
– 3
x
+ 1 .
3.
View the graph in the decimal viewing window by pressing ZOOM
A (ZOOM) 7 (Dec).
4.
Press TRACE and move cursor to the left of the left-hand root. Press 2ndF
CALC to view the calculate menu.
5.
Press 5 (X_Incpt) to find the left-hand root.
6.
Press 2ndF CALC 5 (X_Incpt) to find the next root.
JUMPING TO FIND ROOTS