


  

Indicates the "top" of equation memory. The memory

 

scheme is circular, so    is also the

 

"equation" after the last equation in equation memory.



The calculator is calculating the integral of an equation

 

or program. This might take a while.



A running CALCULATE,SOLVE or ∫ FN operation was

 

interrupted by pressing or in ALG, RPN, EQN,

 

or PGM mode.

 

Data error:

 

Attempted to save or calculate error data.

 

Attempted to calculate combinations or permutations

 

with r >n, with non–integer r or n, or with n ≥1016.

Attempted to save a complex number or vector in the statistical data.

Attempted to save a base-n number that contains digits greater than the largest base-n number digit allowed.

Attempted to save an invalid data in the statistical register using operation.

Attempt to compare complex numbers or vectors.

Attempted to use a trigonometric or hyperbolic function with an illegal argument:

with x an odd multiple of 90°.

or with x < –1 or x > 1. with x ≤ –1; or x ≥ 1. with x < 1.

  Attempted to enter an invalid variable name when solving an equation.

  Attempted a factorial or gamma operation with x as a negative integer.

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