Casio ClassPad 300 manual 111

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		=1 3.6 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 w or
	15					=@)N 20 c
= 0.7953654612						15 w
Solve for x given		TRIG		Func		=# 0.88 )/4 w or
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.

20021201