This error message occurs when one or more arguments expected by the procedure are missing. Refer to the help page corresponding to your procedure for the correct calling sequence.

Example 1

In the following example, it is unclear whether the argument $i$represents the summand or the index.

Solution:

For this example, assume the intention was for the summand and index to both be $i\.$ You must explicitly state both arguments for sum.

Example 2

In the following example, the polynomial to be factored has not been supplied to the factor command.

Solution:

Include polynomial to be factored.

Example 3

In this example, the procedure Adder has been defined with two parameters, a and b.

Here, the second argument is missing.

Solution:

Add the missing second argument.

Example 4

Without the second argument, it is unclear which variable is supposed to be eliminated

Solution:

Add the missing second argument.