... i'm baffled, yet again. do i just add x squared to both sides? then i get x cubed is less than or equal to x squared, and yet again, i'm stumped. help?
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Originally Posted by jjkelder ... i'm baffled, yet again. do i just add x squared to both sides? then i get x cubed is less than or equal to x squared, and yet again, i'm stumped. help? $\displaystyle x^3-x^2\leq 0$ Factorise ...$\displaystyle x^2(x-1) \leq 0$ and you can see when this is <=0
Originally Posted by a tutor $\displaystyle x^3-x^2\leq 0$ Factorise ...$\displaystyle x^2(x-1) \leq 0$ and you can see when this is <=0 Draw a graph of $\displaystyle y = x^3 - x^2 = x^2(x-1)$. You want the values of x for which the graph is on or under the x-axis.
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