Use derivatives to show that a. (1+x) In(1+x) > arctan x for x> 0. b. arcsin V1 – x2 + arccos x = T for x E (-1,0). 8. Use the Intermediate Value Theorem to prove that the equation .e+x2 = 4 has a real root. 9. Use Cauchy's form of the Mean Value Theorem to prove that Inr< -1 for r > 0 and x > 1. 10. Let f : [-3, 2] → R, f(x) = 2x³ + 3x2 increasing or decresing. Find its maximum and minimum, and prove that there is c E (1, 2) such that f'(c) = 11. 12x + 5. Find the intervals on whichf is COS nx 11. Show that the sequence of functions fn(x) = converges uniformly on R. 12. Let f : [a, b] → [a, b] be continuous. Show that there is ro E [a, b] with f(xo) = x0- 13. Let f : (0, 1) → R, f(x) = max{cos x, cos' x}. Is f differentiable? Explain. S (In a), 0< x e differentiable at e.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Please help with question 10-14. Explain clearly. Even if you are only able to solve 1 problem its fine
Use derivatives to show that
a. (1+x) In(1+x) > arctan x for x> 0.
b. arcsin V1 – x2 + arccos x = T for x E (-1,0).
8. Use the Intermediate Value Theorem to prove that the equation .e+x2 = 4 has a
real root.
9. Use Cauchy's form of the Mean Value Theorem to prove that Inr<
-1
for r > 0
and x > 1.
10. Let f : [-3, 2] → R, f(x) = 2x³ + 3x2
increasing or decresing. Find its maximum and minimum, and prove that there is c E (1, 2)
such that f'(c) = 11.
12x + 5. Find the intervals on whichf is
COS nx
11. Show that the sequence of functions fn(x) =
converges uniformly on R.
12. Let f : [a, b] → [a, b] be continuous. Show that there is ro E [a, b] with f(xo) = x0-
13. Let f : (0, 1) → R, f(x) = max{cos x, cos' x}. Is f differentiable? Explain.
S (In a), 0< x <e,
14. Determine a and b such that f: (0, o0) → R, f(x)
is
ax +b,
x> e
differentiable at e.
Transcribed Image Text:Use derivatives to show that a. (1+x) In(1+x) > arctan x for x> 0. b. arcsin V1 – x2 + arccos x = T for x E (-1,0). 8. Use the Intermediate Value Theorem to prove that the equation .e+x2 = 4 has a real root. 9. Use Cauchy's form of the Mean Value Theorem to prove that Inr< -1 for r > 0 and x > 1. 10. Let f : [-3, 2] → R, f(x) = 2x³ + 3x2 increasing or decresing. Find its maximum and minimum, and prove that there is c E (1, 2) such that f'(c) = 11. 12x + 5. Find the intervals on whichf is COS nx 11. Show that the sequence of functions fn(x) = converges uniformly on R. 12. Let f : [a, b] → [a, b] be continuous. Show that there is ro E [a, b] with f(xo) = x0- 13. Let f : (0, 1) → R, f(x) = max{cos x, cos' x}. Is f differentiable? Explain. S (In a), 0< x <e, 14. Determine a and b such that f: (0, o0) → R, f(x) is ax +b, x> e differentiable at e.
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