Sharp EL-9900 - Manual (Page 82)

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Chapter 5: Advanced Calculations — Advanced Keyboard
08
∑( ∑(expression, initial value, end value [, increment])
Returns the cumula-
tive sum of a given
expression from an
initial value to an end
value in the specified
increment value (if
not specified, default increment is 1).
09 sec sec value
Enters a secant
function to be used in
a trigonometric
expression.
10 csc csc value
Enters a cosecant (cosec) function to be used in a
trigonometric expression.
11 cot cot value
Enters a cotangent (cotan) function to be used in a
trigonometric expression.
12 sec -1 sec -1 value
Enters an inverse
secant.
13 csc -1 csc -1 value
Enters an inverse
cosecant.
14 cot -1 cot -1 value
Enters an inverse cotangent.
15 sinh sinh value
Enters a hyperbolic
sine.
16 cosh cosh value
Enters a hyperbolic cosine.
17 tanh tanh value
Enters a hyperbolic tangent.