Categorie: Tutti - tangent - symmetry - domain - sine

da Stephen Sciacca mancano 11 anni

519

6 trig functions

The document discusses the properties of various trigonometric functions including Tangent, Sine, Secant, and Cotangent. Each function's domain, range, period, intercepts, symmetry, and intervals of increase or decrease are detailed.

6 trig functions

6 trig functions

Cosecant

Domain: all real numbers except k pi, k is an integer. Range: (-infinity , -1] U [1 , +infinity) Period = 2pi symmetry: since csc(-x) = - csc(x) then csc (x) is an odd function and its graph is symmetric with respect the origin. intervals of increase/decrease: over one period and from 0 to 2pi, csc (x) is decreasing on (0 , pi/2) U (3pi/2 , 2pi) and increasing on (pi/2 , pi) U (pi / 3pi/2). Vertical asymptotes: x = k pi, where k is an integer.

Secant

Domain: all real numbers except pi/2 + k pi, n is an integer. Range: (-infinity , -1] U [1 , +infinity) Period = 2 pi y intercepts: y = 1 symmetry: since sec(-x) = sec (x) then sec (x) is an even function and its graph is symmetric with respect to the y axis. intervals of increase/decrease: over one period and from 0 to 2 pi, sec (x) is increasing on (0 , pi/2) U (pi/2 , pi) and decreasing on (pi , 3pi/2) U (3pi/2 , 2pi). Vertical asymptotes: x = pi/2 + k pi, where k is an integer.

Cotangent

Domain: all real numbers except k pi, k is an integer. Range: all real numbers Period = pi x intercepts: x = pi /2 + k pi , where k is an integer. symmetry: since cot(-x) = - cot(x) then cot (x) is an odd function and its graph is symmetric with respect the origin. intervals of increase/decrease: over one period and from 0 to pi, cot (x) is decreasing. Vertical asymptotes: x = k pi, where k is an integer.

Tangent

Domain: all real numbers except pi/2 + k pi, k is an integer. Range: all real numbers Period = pi x intercepts: x = k pi , where k is an integer. y intercepts: y = 0 symmetry: since tan(-x) = - tan(x) then tan (x) is an odd function and its graph is symmetric with respect the origin. intervals of increase/decrease: over one period and from -pi/2 to pi/2, tan (x) is increasing. Vertical asymptotes: x = pi/2 + k pi, where k is an integer.

Sine

Domain: all real numbers Range: [-1 , 1] Period = 2pi x intercepts: x = k pi , where k is an integer. y intercepts: y = 0 maximum points: (pi/2 + 2 k pi , 1) , where k is an integer. minimum points: (3pi/2 + 2 k pi , -1) , where k is an integer. symmetry: since sin(-x) = - sin (x) then sin (x) is an odd function and its graph is symmetric with respect to the origon (0 , 0). intervals of increase/decrease: over one period and from 0 to 2pi, sin (x) is increasing on the intervals (0 , pi/2) and (3pi/2 , 2pi), and decreasing on the interval (pi/2 , 3pi/2).

Cosine

Domain: all real numbers Range: [-1 , 1] Period = 2pi x intercepts: x = pi/2 + k pi , where k is an integer. y intercepts: y = 1 maximum points: (2 k pi , 1) , where k is an integer. minimum points: (pi + 2 k pi , -1) , where k is an integer. symmetry: since cos(-x) = cos (x) then cos (x) is an even function and its graph is symmetric with respect to the y axis. intervals of increase/decrease: over one period and from 0 to 2pi, cos (x) is decreasing on (0 , pi) increasing on (pi , 2pi).