Sharp EL-9900 - Manual (Page 107)

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Chapter 6: Advanced Graphing Features — Advanced Keyboard
D EXP
2 e x Use this tool when the equation contains a form of “e x ”.
4 In X Use this tool when the equation contains a form of “In
x ”.
E TRIG
4 sin –1 X Use this when the equation contains an arc sine
function.
5 cos –1 X Use this when the equation contains an arc cosine
function.
6 tan –1 X Use this when the equation contains an arc tangent
function.
F HYP
1 sinh X Use this when the equation contains a hyperbolic sine
function.
2 cosh X Use this when the equation contains a hyperbolic
cosine function.
3 tanh X Use this when the equation contains a hyperbolic
tangent function.
4 sinh -1 X Use this when the equation contains an inverse
hyperbolic sine function.
5 cosh -1 X Use this when the equation contains an inverse
hyperbolic cosine function.
6 tanh -1 X Use this when the equation contains an inverse
hyperbolic tangent function.