Casio ClassPad OS Version 3.03 manual 131

2-4-4

Function Calculations

kHyperbolic Functions (sinh, cosh, tanh) and Inverse Hyperbolic Functions (sinh–1, cosh–1, tanh–1)

		Problem		Use this keyboard:				Operation
mth	abc			cat	2D
sinh3.6 = 18.28545536				TRIG		Func		=13.6 w
cosh1.5 – sinh1.5				TRIG		Func		=21.5 )-11.5
= 0.2231301601								w
e–1.5= 0.2231301601*					MATH	Func		e-1.5 w
cosh–1(		20	)	TRIG		Func		=@20 /15 wor
								=@)N 20 c
15
= 0.7953654612								15 w
Solve for x given				TRIG		Func		=#0.88 )/4 wor
tanh(4x) = 0.88.								)N9=#
x =	tanh–10.88							0.88 )c 4 w
	4
= 0.3439419141

*This problem checks whether coshx  sinhx = ex. Solving the problem above this one (cosh1.5 – sinh1.5) and comparing it with this problem’s solution shows that they are equal.

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