Sharp EL-9900 User Manual

The calculator can accept up to three sequential equation

entries. We will use the v set, since the u set already has an

entry. Move the cursor down to the v(n) entry area, and press
C.

4. Enter 2 

×

, then press

E.
The cursor will be set to the

fourth entry row v(nMin=).

5. Press 

C, then enter 1.

6. Press the 

G key to draw

the graph, then zoom the

graph so that it be comes

visible (

Z, 1 Auto).

7. Use the 

U function to

trace the graph. Press the 

' key to trace the plotted graph

values.

When w, the third sequential equation set is entered, it can also

be compared with the two other equations; simply set the TYPE

under the FORMAT menu to either 4 uw to compare the first set

with the third, or 5 vw to compare the second and the third.

Note: Comparing a sequence with an empty set will result in an

error. If the v set is to be used, then the equation entry rows

will need to have appropriate entries.

• Compare the u(n–1) value against the u(n) value of u(n-1) + 100.

This particular graph equation requires an index to the previous

term (u

).

1. Press 

@ f to enter

the FORMAT menu, then

press 

G to select G

TYPE.

2. Select 1 Web by pressing

1.