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MATH137 Study Guide - Midterm Guide: Intermediate Value Theorem, Liquid Oxygen, Binary Logarithm

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turquoisegnu128
24 Oct 2018
School
University of Waterloo
Department
Mathematics
Course
MATH137
Professor
All

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MATH137 Full Course Notes
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MATH137 Full Course Notes
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Note: only answers (and some proofs) are contained here. whenever x > 1 (b) at a height of 2km the barometric pressure is changing at a rate of 1 kilopascal per km. (c) tanh x = ex e x ex + e x . Thus, by the intermediate value theorem there exists a root of f between. 3x2 sin (cid:20) (b) lim x 0 (c) lim x 0. Cos x sin x cos2 x sec(x2 + x) tan(x2 + x)(2x + 1)(3e2x + 1) 6e2x(sec(x2 + x)) (3e2x + 1)2. 2 (cid:18: x = k , cos sin 1. 3: f (x) is continuous on ( , 1) (1, ). (a) show that sinh 1 x = ln(x + Then, x2 + 1) ey e y x = sinh y = Then, by the quadratic formula we get ey = Since, ey 0 we must have and so y = ln(x +

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Related Questions

we mean that for every e > 0 there exists a 8 >0 such that 1. (a) By lim f(x) = - f(t)<- whenever I > (b) At a height of 2km the barometric pressure is changing at a rate of 1 kiloPascal per km. (c) tanh x = et-e- etter Its domain is R and its codomain is (-1,1). (d) log2 (2) - log2 (5) + log2 (20) = log2 8 = 3 (e) Observe that f(0) = 2, f(1) = 1 – 2 – 3 + 2 = -2, and f() is continuous on the interval [0,1]. Thus, by the Intermediate Value Theorem there exists a root of f between 0 and 1.

[1] 1. (a) Solve 2 – 31 < 7. Solution: We have – 7<-3 < 7 which gives -4 0 on (-0, 1] U [2,). Next, we need to see where Vr2 – 3r +2 -1 > 0. If r2 - 3.c + 2 – 1 > 0, then V.22 – 3.0 +2 > . Observe that this is definitely true if r < 0. If r > 0, then squar- ing both sides we get 22 - 3.+2 > 1 2 > 3. V A VICO Thus, the domain of f is (-00, ). [2] (c) Find the exact value of tan(sec-14). Solution: Let y = sec-14. Then, sec y = 4. From the diagram we get that tan(sec-? 4) = tan y = 15 [2] (d) Find all r such that sin(2.x) = COS I. Solution: We have 2 sin r cos r = COS I, SO 0 = 2 sin Cos I -Cos I = cos .r (2 sin c - 1). Hence, sin(2x) = cost when cos x = 0, or when sin r = Thus, r= +ik, kez, I= +2nk, ke Z, or r= +2nk, kez [2] (e) State the precise mathematical definition of lim f(x) = 0. Solution: For every e > 0 there exists a 8 >0 such that if 0 < x-al <, then f(c) >

1. (a) State the precise mathematical definition of lim f(0) = -0. (b) If B(h) is the barometric pressure in kiloPascals at height h in kilometers. What is the physical interpretation of B'(2) = 1? (c) Write the definition of tanh c and state its domain and codomain. (d) Find the exact value of log (2) – log (5) + log2 (20). (e) Use the Intermediate Value Theorem to prove that the function f(c) = r4 - 2r3 – 3.r+2 has at least one real root.