- Notation & Precision
- Angle Unit
- Unit Conversions
- Statistics
- Physical Constants
- Degree/Minute/Second
- Fractions
- Complex Numbers
- Other Functions
- Order Of Operations

##### NOTATION & PRECISION

You can change your **decimal-notation** with the notation button, which shows STD by default. Pressing the notation button will cycle through the following notation modes:

- STD – Prints in
**standard**notation with all significant decimal digits up to the current precision. - FIX – Prints in
**fixed**notation with a fixed number of decimal digits equal to the current precision. - SCI – Prints in
**scientific**notation with a fixed number of decimal digits equal to the current precision. - ENG – Prints in
**engineering**notation with a fixed number of decimal digits equal to the current precision.

You can select your **decimal-precision** by pressing and holding the notation button to access the precision button. The precision button always shows the current precision, which by default shows P:12 since the default precision is 12.

##### ANGLE UNIT

The **angle-unit** button can be pressed to select one of three modes for angle-based calculations. The three modes are **degrees**, **radians**, and **gradians** and the button will respectively show the following abbreviations: DEG, RAD and GRD.

Most angle-based calculations in your history will show the angle that they were calculated at as seen in the following examples:

sin^{d}(30) = 0.5

cos^{r}(0) = 1.

tan^{g}(200) = 0.

Sometimes you won’t see an angle-unit abbreviation in the history because the angle is explicit:

sin(30°) = 0.5

##### UNIT CONVERSIONS

Unit Conversions are really simple with CalcTastic. Simply type in a number, press the convert button and follow the menu. In algebraic mode, it will convert your current operand (under your cursor). Here’s an example where we’ll convert 2 hours into minutes:

CLR2CONV

Select **Time**

Choose **Hours**

Choose **Minutes**

The converted value will be inserted into your calculation (or stack in RPN) and a copy of the entire conversion will be saved in your history:

Time: 2h → min = 120.

##### STATISTICS

CalcTastic has a a unique feature where you can get a series of statistics about the results of your on-screen history (or values on your stack in RPN). Simply do some calculations (or add values to your stack in RPN):

And then press the STATS button and you’ll be presented with 15 different statistics about your values:

##### PHYSICAL CONSTANTS

To access the built-in list of **physical constants**, simply press the CONST button. Select the constant you want and it will be inserted into your current calculation (or stack in RPN):

##### DEGREE/MINUTE/SECOND

The D°M’S button is used for entering **Degrees, Minutes, Seconds** values (DMS hereafter) or converting back and forth to **Degrees**. Both input types are mostly the same. The examples below will work for either type:

- Algebraic – You can convert the result of your current equation, after pressing =.
- RPN – You can convert your most recent, completed stack entry.

**Degrees** to **DMS**

CLR7.62=D°M’S7°37’12.0″

**DMS** to **Degrees**

CLR5D°M’S5D°M’S6=5°5’6.0″D°M’S5.085

##### FRACTIONS

The fraction button a/b can be used to enter a **fraction** or convert back-and-forth between decimal and fraction form. You can also convert a fraction between **mixed** and **common** form.

The examples below will work for either input type:

Enter in **Mixed** form

CLR2a/b3a/b7=2 ^{3}/7

Enter in **Common** form

CLR4a/b32=^{1}/8

Convert **Decimal** to **Fraction**

CLR6.5=a/b^{13}/2

Cycle forms (previous example) and back to **Decimal**

^{13}/2a/b6 ^{1}/2a/b6.5

* Fractions will be automatically reduced for you.

* Common form is the default when converting from decimal to fraction.

##### COMPLEX NUMBERS

Complex numbers can be entered in either **rectangular** form or **polar** form (full version only). Here are some examples in algebraic mode:

**Rectangular** form

CLR2+3i=2+3i

**Polar** form

CLR2∠3=2∠3

You can switch between forms for any individual complex number by pressing the i or ∠ button. Assuming we’re in **radians**, lets take the previous result and switch to rectangular and back:

2∠3i-1.979984993201 +0.28224001612i∠2∠3

Polar-form complex numbers will always be reduced to the simplest form (positive magnitude with a principal argument). Here is an example in **degrees**:

CLR±5∠370=-5∠^{d} 370 = 5∠-170

Polar-form complex number **answers** in your history will also always print in the current angle-unit. If you follow up the previous example by changing to radians RAD, the entry in history will change to:

-5∠^{d} 370 = 5∠-2.96705972839

When using rectangular-form complex numbers in a calculation, you may want to surround them with parenthesis in order to get the proper order of operations you desire. Consider the following two examples:

CLR1+2i×3=1+6i

CLR(1+2i)×3=3+6i

You can also use parenthesis (and other operations) within complex numbers. This is because all complex numbers are created with normal calculations. Even the polar angle ∠ is considered a calculation. Here is an example in **degrees**:

CLR7x²∠(360÷3)=49∠120

Even fractions can be used in complex numbers, like so:

CLR7+1a/b2i=7+^{1}/2i

##### OTHER FUNCTIONS

The rest of the functions in the scientific-mode are fairly easy to use, so my goal here is to simply give an example (or two) of each. Press CLR before each example:

###### GENERAL

What is the ceiling of 5.2?

CLRCeil5.2=6.

What is the floor of -4.4?

CLRFloor±4.4=-5.

What is the absolute value of -3?

CLRAbs±3=3.

What is the value of 19 mod 3?

CLR19Mod3=1.

What is the reciprocal of 7.5?

CLR1/x7.5=0.133333333333

What is 9 squared?

CLR9x²=81.

What is the square root of 64?

CLR√x64=8.

What is 5 to the power of 3?

CLR5y^{x}3=125.

What is the 4th root of 28?

CLR4^{y}√x28=2.300326633791

###### PERCENTAGES

What is 5% of 250?

CLR250×5%=12.5

What percentage is 5 of 250?

CLR5÷250%=2.

What is 250 plus 5%?

CLR250+5%=262.5

What is 250 minus 5%?

CLR250−5%=237.5

What is the percent-change going from 7 to 8 (markup)?

CLR7Δ%8=14.28571428571

What is the percent-change going from 8 to 7 (margin)?

CLR8Δ%7=-12.5

###### TRIGONOMETRIC

What is the sine of 2π (in radians)?

CLRSin2π=0.

What is the cosine of 180 (in degrees)?

CLRCos180=-1.

What is the tangent of 250 (in grads)?

CLRTan250=1.

What is the arcsine of 1 (in radians)?

CLRasin1=1.570796326795

What is the arccosine of 0 (in degrees)?

CLRacos0=90.

What is the arctangent of 0 (in grads)?

CLRatan0=0.

###### LOGARITHMS

What is the natural log of 2e?

CLRLn2e=1.69314718056

What is the base-10 log of 10000?

CLRLog1EEX4=4.

What is the base-2 log of 64?

CLRLog64)÷Log2=6.

What is e^5?

CLRe^{x}5=148.4131591026

What is 10^5?

CLR10^{x}5=100,000.

###### STATISTICAL

What is the factorial of 7?

CLR7x!=5,040.

What is nPr(8, 2)?

CLR8nPr2=56.

What is nCr(8, 2)?

CLR8nCr2=28.

Random decimal between 0 and 1?

CLRRandom=

Random integer between 0 and 100?

CLR100Random=

###### COMPLEX

What is the real part of 2+3i?

CLRRe2+3i=2

What is the imaginary part of 2+3i?

CLRIm2+3i=3

What is the argument of 2∠4 (in degrees)?

CLRArg2∠4=4

What is the magnitude (absolute value) of 2∠4?

CLRAbs2∠4=2

What is the conjugate of 2+3i?

CLRConj2+3i=2−3i

##### ORDER OF OPERATIONS

If you omit parenthesis, here is the order of operations for the Scientific Mode:

- Anything on the same line has equal priority (as other items on that line)
- Anything below has lower priority
- Anything above has higher priority

7 – ()

6 – ∠

5 – !

4 – √x ^{y}√x x² y^{x} e^{x} 10^{x}

3 – × ÷ 1/x ± %

2 – + −

1 – nPr nCr Mod Δ%

*Implicit multiplication has the same priority as regular multiplication.