Texas Instruments TI-60 - Page 34

CHAPTER 1-3
ALGEBRAIC KEYS
Not* : The key sequence [hyp i 2nd is the same as If just ! 2nd had been
pressed. The key sequence 2nd i [hyp is the same as I* fust [hyp! had
been pressed. Pressing [hyp, twice returns the following trigonometric
function to its primary function.
Example : Calculate sinh 3 and tanh' 1 0.5
Praaa Display Comments
CBffiiiHLI 0 Clear calculator
3 hyp | sin 10 01787493 Find Sinh 3
•* [WYlffiyill Lien i 0 549306144 Find tanh’ 1 0.6
12nd [HJ. I2wd I [AHJ — Percent and percent change
These keys are useful for a wide vanety of business and domestic
percentage calculations
The 2nd [H] key converts the number In the displ ay to a decimal percent
by multiplying it by 0.01 If you enter 43.9 end press [2 nd JHJ 0.439 is
displayed
The real power of the 2nd [H| key is demonstrated when il is used with
an operation key This allows "mark-up" and "mark-down" as well as
straight and inverted percentage calculations The rules for using the Itrid I
[HJ key in these situations are as follows
□□ h i*nd 1 [HJ = [ adds of m to m
m | - i n 2nd [HJ ■ subtracts nH of m from m
m I * n and [HJ ■ multiplies m by nH
m GEi n 2nd [HI - divides m by nH
The 2nd [*1HJ (change percent or delta percent) key calculates the
percentage change between two values This type ol calculation Is often
used In business and everyday situations
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