Attempt to perform an illogical operation (division by zero, etc.).

Action

Check your input values and make sure they are all within the allowable ranges. Pay special attention to values in any memory areas you are using.

Stk ERROR

Cause

Capacity of the numeric stack or operator stack is ex- ceeded.

Action

Simplify the calculation. The numeric stack has 10 levels and the operator stack has 24 levels.

Divide your calculation into two or more separate parts.

Syn ERROR

Cause

Attempt to perform an illegal mathematical operation.

Action

Press e or r to display the calculation with the cursor located at the location of the error. Make nec- essary corrections.

Arg ERROR

Cause

Improper use of argument

Action

Press eor rto display the location of the cause of the error and make required corrections.

kOrder of Operations

Calculations are performed in the following order of prec- edence.

1Coordinate transformation: Pol (x, y), Rec (r, θ)

Integrations: dx

2Type A functions:

With these functions, the value is entered and then the

function key is pressed. x2, x1, x!, ° ’ ”

3Powers and roots: xy, x

E-32