Currently set to Index
Currently set to Follow

Common Input Errors with Your Calculator that You Probably Didn’t Notice

You studied so hard only to be failed by your calculator – ouch!


218
Share via
11 shares, 218 points
Share via

Know thy calculator

 

 

Engineers, whatever field you specialize in, have a universal best friend: a scientific calculator.

Almost all the time – when your fingers can no longer perform a trigonometric function – you depend on your life with the calculators in solving problems. But there will be cases that you will be faced with errors you didn’t know you have made. And that could cost you a failing grade or even your job. Maybe even lives of people.

While there are so many kinds of calculators, here are the common input errors that you may have encountered in any calculator. It’s best that you read your calculator manuals, but most likely you can find those input errors here:

 

Buy this Sharp scientific calc today

 

Using [–] instead of [(-)] to indicate that a number is negative

Common rookie error. You use the [–] to subtract, and [(-)] to denote a negative number. There is a difference. When you use [–] instead of [(-)] in the interior of an expression to denote a negative number, the calculator responds with the syntax error message.

 

Buy this HP scientific calc today

 

Indicating the order of operations incorrectly by using parentheses

In your calculator, –3^2 is not the same as (–3)^2. The calculator first performs the operation in parentheses, then it squares the number. If there is a negative outside the parentheses, it first performs the squaring, then the operation of a negating a number. That’s how crucial the order of operations is in evaluating expressions.

Read more  The Best & the Worst Professors in Engineering School

 

Buy this Casio scientific calc today

 

Entering an angle in degree in radian mode

In the calculator, trigonometric functions can be used with two modes: degree or radian. Just make sure that you are using the degree mode or radian mode, depending on what you’re required. Changing the mode depends on the settings of your calculator.

 

Buy this Casio scientific calc today

 

Placing the powers for trigonometric functions

It can only be   photo 1_zpszqanrvuh.jpg since  photo 2_zpsuzc4kgxa.jpg. Remember the order of operations?

Yeah, that’s it. All trigonometric functions hold this notational idiosyncrasy.

 

Buy this Canon scientific calc today

 

Entering the inverse trigonometric notation

Here’s another: just because the trigonometric function is raised to a negative number, which you know is an inverse, it is not an exponent; in the calculator, the inverse of the cos(x) function is not 1/cos(x). In short,   but  photo 4_zps8vuth2z1.jpg.

Since you are already here, let’s also discuss the kinds of calculator errors that you usually encounter according to Casio.

 

Buy this Engineer’s T-Shirt today

 

Ma ERROR or Math ERROR

Cause: The calculation result is outside of the allowable calculation range or you are trying to perform an illegal mathematical operation (such as division by zero).

Action: Check your input values and adjust them to allow the calculation result to be within the allowable range. If you are using memory for your calculation, make sure that you check the memory value.

 

Buy this Engineer’s Pen today

 

Syn ERROR or Syntax ERROR

Cause: The calculation expression is the wrong syntax, or the program you are using contains a syntax error.

Read more  Math Tricks You Could Use in Your Daily Life

Action: Press the <right> or <left> key to display the location of the error, and correct it.

 

Buy this Table Cup Holder today

 

Stk ERROR or Stack ERROR

Cause: The calculation you are performing has caused the capacity of the numeric stack or the command stack to be exceeded.

Action: Simplify your calculation expression. You could also split your calculation expression into two or more parts and execute the parts separately.

 

Buy this mechanical keyboard today

 

Mem ERROR 

Cause: You executed a matrix, graphing, or some other operation that caused remaining memory capacity to be exceeded.

Action: Delete memory data you no longer need. Make sure that the number of variables used in your expression does not exceed the number of variables that are available.

You are welcome.

More Calculator Tricks

One Math Problem But Two Different Answers

Best Scientific Calculators According to Engineering Professors

Engineering Students Make Calculator Mistakes Once in a While

Scientific Calculator: An Engineering Student’s Best Friend in College

 

Share via


Like it? Share with your friends!

218
Share via
11 shares, 218 points
Engr. Amal Grover
A chemical engineer at Tata Chemicals. Indiana Institute of Technology alumni. Blogging about cool stuff. Follow me on Facebook https://www.facebook.com/amal.grover

0 Comments

Your email address will not be published. Required fields are marked *

I accept the Privacy Policy * for Click to select the duration you give consent until.

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Send this to a friend