Casio fx-115ES PLUS - Page 24

E-23
Examples
sin 30°= 0.5 bv s 30 )= 0.5
sin
−1
0.5 = 30° bv 1s(sin
−1
) 0.5 )= 30
sinh 1 = 1.175201194 wb(sinh) 1 )= 1.175201194
cosh
–1
1 = 0 wf(cosh
−1
) 1 )= 0
π /2 radians = 90°, 50 grads = 45° v
(15(π)/ 2 )1G(DRG')c(
r
)= 90
50 1G(DRG')d(
g
)= 45
To calculate e
5
× 2 to three significant digits (Sci 3)
1N(SETUP)7(Sci)3
B 1i(%) 5 e* 2 =
2.97×10
2
b 1i(%) 5 )* 2 = 2.97×10
2
log
10
1000 = log 1000 = 3 l 1000 )= 3
log
2
16 = 4 l 2 1)(,) 16 )= 4
B & 2 e 16 = 4
To calculate ln 90 (= log
e
90) to three significant digits (Sci 3)
1N(SETUP)7(Sci)3 i 90 )=
4.50×10
0
1.2 × 10
3
= 1200 B 1.2 * 10 6 3 = 1200
(1+1)
2+2
= 16 B ( 1 + 1 )6 2 + 2 = 16
(5
2
)
3
= 15625 ( 5 x)1w(x
3
)= 15625
32
5
= 2 B 16(") 5 e 32 = 2
b 516(") 32 )= 2
To calculate
'
2
×
3
(= 3
'
2
= 4.242640687...) to three decimal
places (Fix 3)
1N(SETUP)6(Fix)3 B ! 2 e* 3 =
3
'
2
1= 4.243
b ! 2 )* 3 = 4.243
∫
1
e
ln(x) = 1
B 7iS)(X))e 1 eS5(
e)= 1
b 7iS)(X))1)(,)
1 1)(,)S5(
e))= 1
To obtain the derivative at point x = π/2 for the function y = sin(x)
V
B 17(F)sS)(X))
e'15(π)e 2 =
0
b 17(F)sS)(X))
1)(,)15(π)' 2 )=
0
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