Casio 3.04 mth, abc, cat, 15 U, Problem, 3.6 U, C 1.5 U, Operation, 0.88 A 4 U, 1.5  1.5, 20 15 Uor, 0.88 4 Uor, Use this keyboard:

2-4-4

Function Calculations

IHyperbolic 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		3.6 U
cosh1.5 – sinh1.5					TRIG		Func		1.5 1.5
= 0.2231301601									U
e–1.5= 0.2231301601*						MATH	Func		C1.5 U
–1		20		)	TRIG		Func		20 15 Uor
cosh		(
		15							- 20 A
= 0.7953654612									15 U
Solve for x given					TRIG		Func		0.88 4 Uor
tanh(4x) = 0.88.									-
	tanh–10.88
x =									0.88 A 4 U
		4
= 0.3439419141

*This problem checks whether coshx M sinhx = eMx. 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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