%3D 8. Use the Intermediate Value Theorem to prove that the equation e~² + x² = 4 has a real root.

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Please help with question 8,9 and 10
7. 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~ª + x² = 4 has a
real root.
x" – 1
for r > 0
9. Use Cauchy's form of the Mean Value Theorem to prove that Inx <
and r > 1.
12x + 5. Find the intervals on which f is
10. Let f : [-3, 2] → R, ƒ(x) = 2r + 3x2
increasing or decresing. Find its maximum and minimum, and prove that there is c E (1,2)
such that f'(c) = 11.
COS na
11. Show that the sequence of functions fn(x) =
n
converges uniformly on R.
12. Let f : [a, b] → [a, b] be continuous. Show that there is xo E [a, b] with f(xo) = xo.
13. Let f : (0, 7) → R, ƒ (x) = max{cos x, cos³ x}. Is f differentiable? Explain.
8.
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Transcribed Image Text:7. 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~ª + x² = 4 has a real root. x" – 1 for r > 0 9. Use Cauchy's form of the Mean Value Theorem to prove that Inx < and r > 1. 12x + 5. Find the intervals on which f is 10. Let f : [-3, 2] → R, ƒ(x) = 2r + 3x2 increasing or decresing. Find its maximum and minimum, and prove that there is c E (1,2) such that f'(c) = 11. COS na 11. Show that the sequence of functions fn(x) = n converges uniformly on R. 12. Let f : [a, b] → [a, b] be continuous. Show that there is xo E [a, b] with f(xo) = xo. 13. Let f : (0, 7) → R, ƒ (x) = max{cos x, cos³ x}. Is f differentiable? Explain. 8. étv MacBook Air 80 888 DD F3 F4 F5 F6 F7 F8 F9 F10 %23 2$ & * 3 4 6. 8. 9 R Y U F H K ト
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