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# Eval

#### + By NIXON

An advanced scientific calculator with support for complex numbers and fractions. Free graphing calculator also available.

Features:
- Complex (imaginary) numbers (a+bi or polar form)
- Probability distribution functions (binomial, chi-square, Gaussian (normal), geometric, inverse Gaussian, Poisson, Student-T PDF)
- Cumulative PDFs (CDF)
- Numbers stored internally as fractions
- Mixed/improper fractions
- Function integrals and numerical derivatives
- Live Calculation: evaluate expressions as they are entered
- Trigonometric functions for complex numbers
- nCr and nPr (Combinations and permutations)
- Haptic feedback
- Unlimited expression history
- Physical and chemical constants
- User-defined variables

NOTES:
- To change the display mode (fraction, polar, etc.), click on an evaluation.
- To use internal fractions, press the Divide [÷] key instead of entering decimals. For example, press [1][÷][4] instead of 0.25.
- Improper fraction mode will display mixed fractions if they're approximated. It will only display improper fractions when they can be used internally.
- Decimals up to 5 places will be converted to internal fractions.
- For more information, go to Menu > Settings, then Help and Information or Enumeration of Functions.

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Recently changed in this version

Improvements with fractional powers
New sto() function

• (66 stars)

I'm studying for my 3rd actuarial exam and I needed a quick normal and inverse normal calculator that isn't connected to the Internet so that I can focus and not goof off. I haven't played with the rest of the app yet but I did notice it would be nice to

• (66 stars)

Is there a calc that could have a fraction key?!!!!

• (66 stars)

Finally a sci calc with fractions! Fantastic!

• (66 stars)

Best. Calculator. App. Period.

• (66 stars)

Absolutely fantastic. A little confusing at first, but works like a dream.

• (66 stars)

Great app. For those of you that want to use fraction mode, just tap the input line and it will switch between modes. Seems to drain my battery fast.

• (66 stars)

Good app. It's rare to find one with statistical distributions. I would like to see graphing functions added.