Programming Answer 1

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Programming Tutorial Exercise 1
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Just enter the formula `ninteg(sin(t)/t, t, 0, x)', type `Z F', and
answer the questions.  Since this formula contains two variables, the
default argument list will be `(t x)'.  We want to change this to
`(x)' since `t' is really a dummy variable to be used within `ninteg'.

The exact keystrokes are `Z F s Si RET RET C-b C-b DEL DEL RET y'.
(The `C-b C-b DEL DEL' are what fix the argument list.)