question 5 5. (a) Informally find a positive integer k for which the following is true:...
R->H 7. Prove by induction that the following equation is true for every positive integer n. (4 Points) 1. 4lk11tl + 2K ²+ 3k 4k+4+H26² +3k {(4+1) = (40k41) 40) j=1 (4i + 1) = 2 n 2 + 3n 2K?+75 +5 21 13 43 041) 262, ultz
1. (Integers: primes, divisibility, parity.) (a) Let n be a positive integer. Prove that two numbers na +3n+6 and n2 + 2n +7 cannot be prime at the same time. (b) Find 15261527863698656776712345678%5 without using a calculator. (c) Let a be an integer number. Suppose a%2 = 1. Find all possible values of (4a +1)%6. 2. (Integers: %, =) (a) Suppose a, b, n are integer numbers and n > 0. Prove that (a+b)%n = (a%n +B%n)%n. (b) Let a,...
Prove using mathematical induction that for every positive integer n, = 1/i(i+1) = n/n+1. 2) Suppose r is a real number other than 1. Prove using mathematical induction that for every nonnegative integer n, = 1-r^n+1/1-r. 3) Prove using mathematical induction that for every nonnegative integer n, 1 + i+i! = (n+1)!. 4) Prove using mathematical induction that for every integer n>4, n!>2^n. 5) Prove using mathematical induction that for every positive integer n, 7 + 5 + 3 +.......
please answer questions #7-13 7. Use a direct proof to show every odd integer is the difference of two squares. [Hint: Find the difference of squares ofk+1 and k where k is a positive integer. Prove or disprove that the products of two irrational numbers is irrational. Use proof by contraposition to show that ifx ty 22 where x and y are real numbers then x 21ory 21 8. 9. 10. Prove that if n is an integer and 3n...
4.(15 pts) Let a be a positive odd integer. Find the value of the following integral in terms of a using substitution with u = = sin(ax). jë sinº (ax)cosº (ax) dx 5. (10 pts) Let a, b, and cbe positive integers. Evaluate the following limit. If you use 2 Hospital's Rule, be sure to give indeterminare pe and mention when you inoke it. In (a+beck lim 06 x
Problem 5 20 marks total 0 < y < x2 < Consider two rvs X and Y with joint pdf f(x,y) = k-y, Sketch the region in two dimensions whereAx.y is positive. Then find the constant k and sketch /fx.y) in three dimensions. I4 marksl (a) Find and sketch the marginal pdf/(x), the conditional pdf ffr11/2), and the conditional cdf F11/2) (b) 4 marks] Find P(XcYlY> 1/2), E(XIY=1/2) and E(XlY>1/ 2). /4 marks/ (c) (d) What is the correlation between...
#7. TRUE/FALSE. Determine the truth value of each sentence (no explanation required). ________(a) k in Z k2 + 9 = 0. ________(b) m, n in N, 5m 2n is in N. ________(c) x in R, if |x − 2| < 3, then |x| < 5. #8. For each statement, (i) write the statement in logical form with appropriate variables and quantifiers, (ii) write the negation in logical form, and (iii) write the negation in a clearly worded unambiguous English sentence....
Question 2: (5+15=20 points) a) Find the value of the constant k e R for which the differential equation (2+ y + xy) dx + (1+2+kx*y) dy=0 is exact. b) Find the solution of the initial value problem using the value of k you found in part (a). (2+ y + r?y?)dr + (1 + x + k.xºy)dy = 0, y(0) = 2
Analysis of Algorithms Fall 2013 Do any (4) out of the following (5) problems 1. Assume n-3t is a power of 3 fork20. Solve accurately the following recursion. If you cannot find the exact solution, use the big-O notation. Tu) T(n)Tin/3)+2 2. Suppose that you have 2 differeut algorithms to solve a giveu probleen Algorithm A has worst-case time complexity e(n2) and Algorithm B has worst-case time complexity e(nlog n). Which of the following statements are true and which are...
Hello, I hope that I got all these questions right, but is important that I do a good job on this for my grade. So, it would be great if someone would check my work for me- just to be sure. :)Thank you for your help!-em(10 points)Score1. The coordinates of the vertices of parallelogram RMBS are R(?4, 5), M(1, 4), B(2, ?1), and S(?3, 0). Using the diagonals, prove that RMBS is a rhombus. Show all your work and state...