TCOLLECT

Type: Command

Description: Linearizes products in a trigonometric expression by collecting sine and cosine terms, and by combining sine and cosine terms of the same argument.

Access:

Trigonometry, …ÑL

 

 

 

Input:

An expression with trigonometric terms.

 

 

Output:

The simplified expression.

 

 

 

Flags:

Exact mode must be set (flag –105 clear).

 

 

 

Numeric mode must not be set (flag –3 clear).

 

 

 

Radians mode must be set (flag –17 set).

 

 

Example:

Collect terms in the expression:

 

 

 

 

sin2x + cos2x

 

 

 

Command:

TCOLLECT(SIN(2*X)+COS(2*X))

 

 

Result:

√2*COS(2*X-π/4)

 

 

 

See also:

TEXPAND, TLIN

 

 

 

 

 

 

 

 

 

TDELTA

Function

 

 

 

Type:

 

 

 

Description:

Temperature Delta Function: Calculates a temperature change.

 

 

TDELTA subtracts two points on a temperature scale, yielding a temperature increment (not an

 

actual temperature). x or x_unit1 is the final temperature, and y or y_unit2 is the initial

 

temperature. If unit objects are given, the increment is returned as a unit object with the same

 

units as x_unit1. If real numbers are given, the increment is returned as a real number.

Access:

…µTDELTA

 

 

 

Flags:

Numerical Results (–3)

 

 

 

Input/Output:

 

 

 

 

 

 

 

 

 

 

 

 

 

Level 2/Argument 1

Level 1/Argument 2

 

Level 1/Item 1

 

 

 

 

 

 

 

 

x

y

→

xdelta

 

 

x_unit1

x_unit2

→

x_unit1delta

 

 

x_unit

'symb'

→

'TDELTA(x_unit, symb)'

 

 

'symb'

y_unit

→

'TDELTA(symb, y_unit)'

 

 

'symb1'

'symb2'

→

'TDELTA(symb1, symb2)'

See also:

TINC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TESTS

 

 

 

 

 

Type:

Command

 

 

 

Description:

Displays a menu or list containing the ASSUME and UNASSUME commands, and tests that can

 

be included in algebraic expressions.

 

 

Access: Catalog, …µ

Flags: If the CHOOSE boxes flag is clear (flag –117 clear), displays the operations as a numbered list. If the flag is set, displays the operations as a menu of function keys.

See also: ALGB, ARIT, CONSTANTS, DIFF, EXP&LN, INTEGER, MAIN, MATHS, MATR,

MODULAR, POLYNOMIAL, REWRITE, TRIGO

Full Command and Function Reference 3-251