Texas Instruments MathPrint TI-30X Plus, Quick Manual

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10
1.3 Pi (symbol pi)
To access
π
, press d (multi-tap key).
Example
Use the TI-
30X Plus MathPrint™ to find the area of a circle whose radius is
8
cm. Give your
answer correct to one decimal place.
Keystrokes and solution :
Press d * and enter
8
.
Press
l n
.
This gives
64π A
=
.
Press
c
to convert to a decimal.
201.1 A
=
(cm
2
) correct to
1
dec. place.
1.4 Surds
Example
Use the TI-
30X Plus MathPrint™ to express
4
2 2 3
−
with a rational denominator.
Keystrokes and solution :
Press
k
and enter
4
.
Press ] and enter
2
.
Press * q € and enter
2
.
Press > - q € and enter
3
.
Press
n
.
4 4 3 8 2
5
2 2 3
+
=
−