Hey guys, i have a test soon and just wanted to get a few things cleared up. Thanks
1. a. How do u identify the x-intercepts of the graph of y=x(x^2-9a^2) (note: a>0)
b. How would u go about sketching the graph of y= x(x^2-9a^2)
2. If the equation 2x^2 + 6=ax has exactly one solution, find the value(s) of a, such that this is true.
3. Is it possible to find the x intercepts of the function f(x)= 4x^3 - 3x^2- 8x + 5 without using a calculator?
4. If the graph of f: R arrow R crosses the x axis exactly three times, which one of the following rules could not be the rule for f?
5. For the curve of the function with equation y= (2-x)(x-2)(x-5), the subset of R for which the gradient of the graph is positive is best described by?