Chapter 6 Flashcards
1
Q
Hyperbolic cosine
A
(e^x + e^-x) / 2
2
Q
Hyperbolic sine
A
(e^x - e^-x) / 2
3
Q
Hyperbolic tangent
A
(sinhx / coshx ) = (e^x - e^-x) / (e^x + e^-x)
4
Q
Hyperbolic cotangent
A
(coshx / sinhx) = (e^x + e^-x) / (e^x - e^-x)
5
Q
Hyperbolic secant
A
(1 / coshx) = 2 / (e^x + e^-x)
6
Q
Hyperbolic cosecant
A
(1 / sinhx) = 2 / (e^x - e^-x)
7
Q
1 =
A
cosh^2(x) - sinh^2(x)
8
Q
cosh(-x)
A
cosh x
9
Q
sinh (-x)
A
sinh x
10
Q
tanh (-x)
A
tanh x
11
Q
cosh (x + y)
A
coshx coshy + sinhx sinhy
12
Q
sinh (x + y)
A
sinhx coshy + coshx sinhy
13
Q
cosh 2x
A
cosh^2(x) + sinh^2(x)
14
Q
sinh 2x
A
2sinh(x)cosh(x)
15
Q
cosh^2 (x)
A
(cosh(2x) + 1) / 2