HP 15c Scientific manual 10.0000, 6667

Appendix D: A Detailed Look at _ 235

Keystrokes	Display
-	008–	30
*	009–	20
3	010–	3
0	011–	0
0	012–	0
3	013–	3
+	014–	40
*	015–	20
6	016–	6
1	017–	1
7	018–	7
1	019–	1
+	020–	40
*	021–	20
2	022–	2
8	023–	8
9	024–	9
0	025–	0
-	026–	30
n	027–	43 32

In Run mode, key in two large, negative initial estimates (such as -10 and -20) and use _to find the most negative root.

Keystrokes		Display
¥				Run mode.
10	“ v	–10.0000		Initial estimates.
20	“	–20
´ _ 2		–1.6667		First root.
O 0		–1.6667		Stores root for deflation.
))		4.0000	–06	Function value near zero.