Hello ! it's for my DNL maths oral wednesday (training) but i'm stuck with the last question :(
Exercice : -3 -2 -1 -10- 5 -5 2 3 The equation of the curve shown above is y = x^3 - 6x +2.
1. Find dy/dx
2. Find, in exact form, the range of values of x for which x³ - 6x + 2 is a decreasing function
3. Find the equationof the tangent to the curve at the point (-1,7).
Find also the coordinates of the point where this tan- gent crosses the curve again.
thank you in advance ^^
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