The graph of a sinusoidal function has a maximum point at (0,8) and then has a minimum point at (5,2).Write the formula of the function, where x is entered in radians.
f(x)=_____
Q. The graph of a sinusoidal function has a maximum point at (0,8) and then has a minimum point at (5,2).Write the formula of the function, where x is entered in radians.
f(x)=_____
Calculate Amplitude: Determine the amplitude of the sinusoidal function. The amplitude is half the distance between the maximum and minimum values of the function. Here, the maximum value is 8 and the minimum value is 2. So, the amplitude A is calculated as:A=28−2=3.
Identify Vertical Shift: Identify the vertical shift of the function. The vertical shift is the average of the maximum and minimum values. Calculate it as:Vertical shift = (8+2)/2=5.
Calculate Period: Calculate the period of the function. Since the function goes from a maximum at x=0 to the next minimum at x=5, half the period is 5. Therefore, the full period T is: T=5×2=10.
Determine Horizontal Shift: Determine the horizontal shift (phase shift) of the function. Since the maximum occurs at x=0, there is no horizontal shift. Thus, the phase shift c is 0.
Write Sinusoidal Function Formula: Write the formula of the sinusoidal function using the values calculated. The general form of a sinusoidal function is:f(x)=A⋅sin(B(x−C))+DWhere A is the amplitude, B is the frequency (B=T2π), C is the phase shift, and D is the vertical shift. Plugging in the values:f(x)=3⋅sin(102π(x−0))+5Simplify B:f(x)=3⋅sin(5π⋅x)+5.
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