Fractions

/ To enter a fraction of the form 3/4. Click a number and then click fraction barthen click another number.

↔ You can use fraction space button to create a number of the form 5 3/4. Enter a numberthen click fraction spaceclick another number and then click on the fraction bar buttonlastly enter another number.

DEC FRA Decimal format button and Fraction format button work as pair. When you choose the one the other is switched off. Decimal format button is used for all decimal work. Also to change a fraction of the form 3/4 to the decimal 0.75or a fraction of the form 7/4 or a mixed number of the form 1 3/4 to the decimal 1.75. Click on the decimal format buttonenter a fraction or mixed numberthen click equals. If the fraction or mixed number is only part of the calculation then omit clicking equals and continue with the calculation per usual. i.e. 3/4 DEC x 6 =. Fraction format button is used to work with all fractions. Also to change a decimal of the form 0.5 to the fraction 1/2or change a decimal of the form 1.75 to a mixed number of the form 1 3/4 or to the fraction 7/4or a fraction of the form 7/4 to the mixed number 1 3/4. Click the fraction format buttonenter a decimalclick equals and then click on a fraction form and then click equals. If the fraction of decimal is part of a calculationomit clicking equals and continue with the calculation.

^b/c ^a+b/c Proper fraction button and Improper fraction button work as pair. When you choose the one the other is switched off.
Proper fraction button is used to change a number of the form of 9/5 to the form of 1 4/5. A proper fraction is a fraction where the numerator (top number) is less than the denominator (bottom number).
Improper fraction button is used to change a number of the form of 1 4/5 to the form of 9/5. An improper fraction is a fraction where the numerator (top number is greater than or equal to the denominator (bottom number).

Views

You can use the view menu button to add fuctionality to the standard calculator.
You can add a scientific keypad to calculate logarithmsa trigonometric keypad to calculate anglesand a fraction keypad to formaddsubtractdivideand multiply fractions.
You can also choose to hide the tape.

Constants

Constants You can use the constants menu button to choose between most common constants atomic and nuclear constants electromagnetic constants physico-chemical constants, universal constantsand x-ray constants.

Scientific

x² X^2 is the square of a number or a number times itself. Enter a numberthen click x^2.

x! X! is x factorial. X is a whole number greater than 0. A number in the form 4! is 4x3x2x1 or 24. Enter a numberthen click x!

¹/x 1/x is the reciprocal of a number and x cannot be zero. Enter a number of the form 0.2 and get 5. Enter a numberthen click 1/x.

x⇄y This button is used to inverse x and y.

BASE Base operation is used to set a number as base (i.e. decimal or hexadecimal system). Enter a numberthen click base.

MOD The modulo operation finds the remainder after division of one number by another. The expression "5 mod 2" would evaluate to 1because 5 divided by 2 leaves a quotient of 2 and a remainder of 1. Enter a numberthen click on MODthen enter another numberthen click equals.

log Log is the logarithm (exponent) on base 10 of a number. The log of a number of 45 is log 45 and equals 1.653212. Enter a numberthen click on Log.

ln

In is natural log or the logarithm (exponent) on base e of a number. The In of a number of 45 is In 45 and equals 3.806662. Enter a numberthen click on In.

lg2 Lg2 is the logarithm (exponent) on base 2 of a number. The log of the number 45 base 2 is lg2 45 and equals 5.49185. Enter a numberthen click on Lg2.

lg_y^x Lgy^x you can use this to raise a logarithm to higher power.

y^x Y^x you can use this to raise a number to higher power. Enter a numberthen click y^xthen enter another number.

^x

√ y

You can use the x-root-of-y button to find any root of a number. Enter a number (y)then click x-root-of-y buttonthen enter another number (x)and then click equals.

10^x 10^x is 10 raised to the x power (exponent). A number in the form of 10^4 is 10000. Enter a number (exponent)then click 10^x.

e^x e^x is e raised to the x power (exponent). A number in the form e^4 is 54.5982. Enter a number (exponent)then click e^x.

2^x 2^x is 2 raised to the x power (exponent). A number in the form 2^4 is 16. Enter a numberthen click 2^x.

e The number e is an important mathematical constant that is the base of the natural logarithm. It is approximately equal to 2.71828.

π The number pi is a mathematical constantthe ratio of a circle's circumference to its diameterapproximated as 3.14159.

φ Phi represents the golden ratiotwo quantities are in a golden ratio if their ratio is the same as the ratio of their sum to the larger of the two quantities. It is approximately 1.61803.

SN You can use the scientific notation button to handle very large numbersthis system makes use of "powers of 10"raising 10 to whatever value you need. You can get either really big numbers by using positive powers like 10^5=100000. Or you can get really small numbers by using negative powers like 10^-5=0.00001. e stands for exponent and is used to represent "times 10 raised to the power of" (x 10^n). For exampleif you want the number 100000000 as a scientific notationyou enter 10then click SNthen 7and then equals (10eX10^7=100000000).

( ) You can use the parentheses pair to group terms. Every parenthesis you open is numberedparenthesis levels are indicated by a number in the display box next to the parentheses buttons. This way you can easily know how deep in a parenthesis you arewhen the expression is complete there are no parenthses left in the display box. This is used for groupings of the form 4+(9x(15-7)+6). Click the open parenthsis buttonenter termsthen click the close parenthesis button.

Trigonometric

GRAD RAD DEG You can choose between GradianRadianand Degree unit modeswhen you choose one the others are switched off.
The gradian (also known as gon) is a unit of plane angle. 1 grad = 1/400 tr = pi/200 rad = 9/10 deg.
The radian is the standard unit of angular measure. 1 rad = 1/2pi tr = approx. 57.296 deg = approx. 63.662 grad.
The degree is a unit of measurement of plane angle. 1 deg = 1/360 tr = pi/180 rad = 10/9 grad.

sin Sine finds the ratio y/r value of an angle. Enter a numberthen click sin.

cos Cosine finds the ratio x/r value of an angle. Enter a numberthen click cos.

tan Tangent finds the ratio y/x value of an angle. Enter a numberthen click tan.

sinh Sinh is the hyperbolic sine or sinh value of an angle. Enter a numberthen click sinh.

cosh Cosh is the hyperbolic cosine or cosh value of an angle. Enter a numberthen click cosh.

tanh Tanh is the hyperbolilc tangent or tanh value of an angle. Enter a numberthen click tanh.

asin Asin is arcsine or sin^(-1). It finds the angle between -90 degrees and 90 degrees inclusive or between -pi/2 and pi/2 inclusivewith this sine value. Enter a numberthen click asin.

acos Acos is arccosine or cos^(-1). It finds the angle between 0 degrees and 180 degrees inclusive or between 0 and pi inclusivewith this cosine value. Enter a numberthen click acos.

atan Atan is arctangent or tan^(-1). It finds the angle between -90 degrees and 90 degrees inclusive or between -pi/2 and pi/2 inclusivewith this tangent value. Enter a numberthen click atan.

ash Ash is arc hyperbolic sinearcsinh or sinh^(-1). It finds the angle with this sh or sinh value. Enter a numberthen click ash.

ach Ach is arc hyperbolic cosinearccosh or cosh^(-1). It finds the angle with this ch or cosh value. Enter a numberthen click ach.

ath Ath is arc hyperbolic tangentarctanh or tanh^(-1). It finds the angle with this th or tanh value. Enter a numberthen click ath.