Tuesday, August 18, 2009

Trigonometry help on domain and range

This Trigonometry help explains about domain and range.

Domain is the set of values that t can take.

here t can take any real value.

so domain is the set of real numbers.

interval notation,domain =(-∞,∞)

we have different trigonometry formulas to solve all kinds trigonometric problems ,
let's how to get the range values.


range of a function f (denoted by ran f ) is the set of all "output" values produced by f. Sometimes it is called the image, or more precisely, the image of the domain of the function. If a function is a surjection then its range is equal to its codomain. In a representation of a function in an xy Cartesian coordinate system, the range is represented on the ordinate (on the y axis).
Now the range of sin t is given by:

-1 ≤ sin t ≤ 1

multiplying by 3,we get

-3 ≤ 3Sint ≤ 3


In interval notation

Range=[-3,3]

No comments:

Post a Comment