This video tutorial teaches how to graph trigonometric functions combined with other functions using a graphing calculator. It covers the limitations of using degrees, the concept of radians, and how to graph functions like x*sin(x) and cos(x)/x. The tutorial also addresses common graphing errors, such as incorrect calculator settings, and provides solutions to ensure accurate graphing results.

What is the result of combining a trigonometric function with a polynomial?

• A straight line

• A very interesting graph

• A constant function

• A quadratic equation

Why are radians preferred over degrees when graphing trigonometric functions with polynomials?

• Radians are easier to calculate

• Radians can be treated like real numbers

• Degrees are too small

• Degrees are not accurate

What is the first step in setting up a graphing calculator for graphing functions like x * sin(x)?

• Use a logarithmic scale

• Adjust the brightness

• Set the calculator to radians

• Set the calculator to degree mode

What does the graph of x * sin(x) resemble when plotted?

• A straight line

• A growing sine curve

• A parabola

• A circle

What is a vertical asymptote in the context of graphing cos(x)/x?

• A horizontal line

• A point where the graph touches the y-axis

• A line where the graph cannot have a point

• A point where the graph crosses the x-axis

Why can't x be zero in the function cos(x)/x?

• Because it would make the function negative

• Because it would make the function undefined

• Because it would make the function zero

• Because it would make the function positive

What acts as a boundary for the function cos(x)/x?

• y = x

• y = x^2

• y = 1/x

• y = sin(x)

What is a common reason for a blank screen on a graphing calculator?

• The calculator is in degree mode

• The calculator is out of battery

• The calculator is broken

• The calculator is in scientific mode

What should you check if the window range is too small?

• The calculator's battery

• The table feature for appropriate values

• The calculator's brightness

• The calculator's mode

What is the key takeaway from this lesson on graphing trigonometric functions with polynomials?

• Only use computer software

• Ensure the calculator is set correctly and the window is appropriate

• Always use degrees

• Graphing is not possible