Page 2-30
To see the corresponding expression in the line editor, press
‚—
and the
A
soft menu key, to show:
This expression shows the general form of a summation typed directly in the
stack or line editor:
Σ
(
index = starting_value
,
ending_value
,
summation expression
)
Press
`
to return to the Equation Writer. The resulting screen shows the value
of the summation,
To recover the unevaluated summation use
‚¯
. To evaluate the
summation again, you can use the
D
soft menu key. This shows again that
.
You can use the Equation Writer to prove that
.
This summation (representing an infinite series) is said to diverge.
Double summations are also possible, for example:
Derivatives
We will use the Equation Writer to enter the following derivative:
Press
‚O
to activate the Equation Writer. Then press
‚¿
to enter the
(partial) derivative sign. Notice that the sign, when entered into the Equation
Writer screen, provides input locations for the expression being differentiated
6
1
2
1
2
π
=
∑
∞
=
k
k
+∞
=
∑
∞
=
1
1
k
k
)
(
2
δ
β
α
+
⋅
+
⋅
t
t
dt
d
Summary of Contents for 50G
Page 1: ...HP g graphing calculator user s guide H Edition 1 HP part number F2229AA 90006 ...
Page 130: ...Page 2 70 The CMDS CoMmanDS menu activated within the Equation Writer i e O L CMDS ...
Page 206: ...Page 5 29 LIN LNCOLLECT POWEREXPAND SIMPLIFY ...
Page 257: ...Page 7 20 ...
Page 383: ...Page 11 56 Function KER Function MKISOM ...
Page 715: ...Page 21 68 Whereas using RPL there is no problem when loading this program in algebraic mode ...
Page 858: ...Page L 5 ...