n” is calculation precision, which you can specify as an integer in the range of 1 to 9. Using any value outside this range causes an error.

This command returns an approximate value when calculation precision is specified for “n”.

This command returns a true value when nothing is specified for “n”. If the true value cannot be obtained, however, this command returns an approximate value along with n = 4.

Discontinuous points or sections that fluctuate widely can adversely affect precision or even cause an error.

Inputting a larger number for “n” increases the precision of the calculation, but it also increases the amount of time required to perform the calculation.

The value you input for the end point of the interval must be greater than the value you input for the start point. Otherwise an error occurs.

Example: To find the minimum point of x2 – 1 with respect to x

Example: To find the maximum point of x2+ 1 with respect to x

ugcd [Action][Calculation][gcd/lcm][gcd]

Function: Returns the greatest common denominator of two expressions.

Syntax: gcd (Exp/List-1, Exp/List-2 [ ) ]

Example: To obtain the greatest common denominator of x + 1 and x2 – 3x – 4

ulcm [Action][Calculation][gcd/lcm][lcm]

Function: Returns the least common multiple of two expressions.

Syntax: lcm (Exp/List-1, Exp/List-2 [ ) ]

Example: To obtain the least common multiple of x2 – 1 and x2 + 2x – 3

udenominator [Action][Calculation][fraction][denominator]

Function: Extracts the denominator of a fraction.

Syntax: denominator (Exp/List [ ) ]

Example: To extract the denominator of the fraction (y – 2)/(x + 1)

unumerator [Action][Calculation][fraction][numerator]

Function: Extracts the numerator of a fraction.

Syntax: numerator (Exp/List [ ) ]

Example: To extract the numerator of the fraction (y – 2)/(x + 1)

Using the Complex Submenu

The [Complex] submenu contains commands that relate to calculations that involve complex numbers.

uarg [Action][Complex][arg]

Function: Returns the argument of a complex number.

Syntax: arg (Exp/Eq/List/Mat [ ) ]

Example: To obtain the argument of complex 2 + i (in the Radian mode)

Chapter 2: Main Application

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