Explore the sum f + g of the functions
f(x) = x3 - 4x
g(x) = 2 cos(x)
The following LiveMath Notebook evaluates the sum f + g and plots the
graphs of f, g, and f + g. You can modify the functions
f and g and see the resulting changes.
View an animation to see how this can be
Which are the graphs of f,
g, and the sum f + g?
For which x is the brown graph
higher than the red graph?