Question 168096: I'm Having hard time solving this homework. Can anyone help?
2. Calculate the points of the tangent of the curve : y = ex(x2 – 8) where and in which the tangent line is horizontal
3. Write one of the two tangents to the curve : y = 1 + x³ which are parallel to this equation 12x - y = 1.
4. Calculate
I) If f(x) = ex cos x calculate f ’(x) et f ’’
(ii) Calculate (d99/ dx99) Sin x
5.
Calculate the derivative :
I) y = xe-x²
II) Let say: r(x) = f(g(h(x))) whit h(1) = 2, g(2) = 3, h’(1)= 4, g’(2) = 5, f’(3) = 6. Calculate r’(1).
III) Show that the function : y = Ae-x + Be-x satisfy the equation with differential y”+ 2y’+y = 0
Answer by oscargut(2103)   (Show Source):
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