Sal finds the equation of a sinusoidal function from its graph where the minimum point (-2,-5) and the maximum point (2,1) are highlighted.

Sal introduces the main features of sinusoidal functions: midline, amplitude, & period. He shows how these can be found from a sinusoidal function's graph.

I don't know about anyone else, but I was initially really confused about why the amplitude was just the absolute value of the coefficient of the sinusoidal function (-1/2 in this example). After thinking about …

Given the formula of a sinusoidal function of the form a*f (bx)+d, draw its graph.

The graph of a sinusoidal function intersects its midline at (0, 1) and then has a maximum point at (7 π 4, 5) . Write the formula of the function, where x is entered in radians.

Given the formula of a sinusoidal function, determine its period.

Given the graph of a sinusoidal function, determine its amplitude.

Finding features from graph Given the graph of a sinusoidal function, we can analyze it to find the midline, amplitude, and period. Consider, for example, the following graph. It has a maximum point at …

Solve equations of the form a*sin(bx+c)=d or a*cos(bx+c)=d where a, b, c, and d are any number.

Given the formula of a sinusoidal function of the form a*f (bx+c)+d, draw its graph.