Hey it's Anh, your scribe for friday...hmm I just want to say that blogs are awsome but VERY frustrating. This scribe post took forever......='( stupid htmls.
Graphing Sinusoidal functions
The role of parameter A
IAI is called the AMPLITUDE.
"A" determines the distance of the maximum and the minimum values from the sinusoidal axis(the average value).
IAI > 1 The graph is stretched vertically.
The role of parameter B
B determines the period of the function according to the equation.
P = 2π/B or B = 2π/period
NOTE: B is NOT the period; it determines the period.
The "period" is the distance along the x-axis required to make one "wave" of the function.
The role of parameter C
C is called the PHASE SHIFT AKA the HORIZONTAL SHIFT.
C > 0 The graph shifts right C units.
C < 0 The graph shifts left C units.
WARNING: watch the sign of C.
The role of parameter D
D is called the VERTICAL SHIFT AKA the AVERAGE VALUE of the function.
D determines the SINUSOIDAL AXIS.
D > 0 the graph shifts up D units.
D < 0 the graph shifts down D units.
The relationship between sine and cosine
They are related by a phase shift of Л/2.
Properties of the 3 basic trig functions