More Polynomial Inequalities... Find the solutions to 0 ≤ x^3 – 6x^2 + 8x – 2 by graphing y ≤ x^3 – 6x^2 + 8x – 2 using technology.

Question

anonymous · Answer

@Mandre

mandre · Answer

x-intercepts = 0.32, 1.46 and 4.21.

anonymous · Answer

But how do you find it? I tried usingm y graphing technology (Geogebra) and it didn't work

mandre · Answer

https://www.desmos.com/calculator Just copy and paste your equation in there and it will draw the graph if it can decipher your equation.

mandre · Answer

You can draw more than one graph using different colors. I find it very useful as I just started wtih calculus first year.

anonymous · Answer

it says it's too complicated

mandre · Answer

I took this:
y ≤ x^3 – 6x^2 + 8x – 2
pasted it into the box and it drew a graph complete with shading.

mandre · Answer

You hover the mouse over the intercepts to read the x,y values.

phi · Answer

In geogebra, I selected under View both Algebra and Graphics
I pasted into the Input box at the bottom
y ≤ x^3 – 6x^2 + 8x – 2
and entered return
it produced the attached