About eMathLab.com

Subject Areas

Tools / Misc

bCalc

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scrnGC2: Calc Input

scrnGC3: f(x) Plot Input

scrnGC4: g(x) Plot Input

The inputs above will be hidden when the program finally gets launched. Currently, I am not hiding them even when you close the calculator. The purpose of the inputs is to help in debugging. This allows you to enter simple code on the calculator screen but the program translates the input to javascript math. Give it a try and see if you notice any obvious problems or have suggestions for improvements.

gCalc

drag-N-drop

Select precision* of answer:

Select angle mode:

Enter expression to evaluate here:

The answer is shown below:

Enter function to be plotted:

f(x) =

Enter 2nd function, if needed:

g(x) =

Change or reset the x-y scaling below:

x_min =

x_max =

y_min =

y_max =

Accuracy Disclaimer

The javascript math object methods used for this calculator are not accurate for very large or very small numbers. In particular, the trigonometric functions may yield very small answers that should actually be zero or very large answers that should be infinite. This typically occurs at 90° or pi/2 intervals.

DO NOT USE WHERE HIGH PRECISION IS REQUIRED. USE AT YOUR OWN RISK.

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About eMathLab.com

eMathLab.com has been developed over the past couple of years in an effort to fill a void which needed to be filled to help those that may not be able to afford private tutoring. This has been a personal effort of mine since retiring from teaching.

Knowing that many students may not be able to afford a tutor and realizing that one person could only tutor a limited number of students at any one time this appeared to be an appropriate medium in which math help could be provided. Hopefully, these exercises and help documents will be beneficial to a much larger audience than could otherwise have been achieved.

A dedicated effort has been made to make the content of this site error-free, however, should you find an error, please do not hesitate to contact me via the link below. Your feedback on how the site might be improved is also welcomed.