Texas Instruments -84 Plus, Manual Book

Page: 466 / 696

Chapter 17: Activities 463
Displaying Complex Results
Displaying Complex Results Displaying Complex Results
Displaying Complex Results
Now solve the equation 2x
2
N
x + 3 = 0. When you set
a+b
i
complex number mode, the
TI-84 Plus displays complex results.
5. Press
}
to move the cursor onto the
+
sign in the formula. Press
¹
to edit the
quadratic-formula expression to become:
6. Press
Í
to find the other solution for
the quadratic equation 3x
2
+ 5x + 2 = 0.
1. Press
z † † † † † †
(6 times),
and then press
~
to position the cursor
over
a+b
i
. Press
Í
to select
a+b
i
complex-number mode.
b – b
2
4 ac – –
2 a
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