Epdf.Pub Calculus-7th-Edition 66. On What Interval Is The Curve Y = 2e' - E Downward? Concave 67. (A) Show That The Function F(X) = In(X + X + 1) Is An Odd Function. (B) Find The Inverse Function Of F. 68. Find An Equation Of The Tangent To The Curve Y = E That Is! Perpendicular To The Line 2 X - Y = 8. 69. Show That The Equation Xin = 2 Has No Solution.

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epdf.pub calculus-7th-edition 66. On what interval is the curve y = 2e'-e" concave downward? 67. (a) Show that the function f(x) = ln(x + x+1) is an odd function. (b) Find the inverse function of f. V 68. Find an equation of the tangent to the curve y = e' that is perpendicular to the line 2x - y = 8. 69. Show that the equation x 1/In x = 2 has no solution. What can you say about the function f(x) = x/ 70. Any function of the form f(x) = [g(x)], where g(x) > 0, can be analyzed as a power of e by writing g(x)=en so that f(x) exing 10442138 device, calculate each limit. SO