3. Let Tn(x) be the degree n Chebyshev polynomial. Evaluate Tn (0.5) for 2 <n <...
4. Let f()VI+ x. (a) Compute P2(x), the degree 2 Taylor polynomial for f at ro 0. (b) Use P2 to approximate f(0.5) required to evaluate a real polynomial of degree 5. How many multiplications number? Explain n at a real are 6. Show that if x, y and ry are real mumbers in the range of our floating point system, then ay-f(ry3 + O(*) ay
3. Determine if each set is a subspace of the space of degree < 2 polynomials. If so, provide a basis for the set. (a) Degree s 2 polynomial functions whose degree 1 coefficient is zero: $(x) = ax2 + c where a,CER. (b) Degree s 2 polynomial functions whose degree 1 coefficient is 1: f(x) = ax2 + x + c where a,CER.
2. Let X have the pdf Ix(x) = .. ti, 0 < x < 2. Find the pdf of Y X2/2 and P(0 <Y < 1).
Let f (x) be a monic polynomial of degree n with distinct zeros ai,..., an. Prove -1 Let f (x) be a monic polynomial of degree n with distinct zeros ai,..., an. Prove -1
5. (4 pts) Let X(ej) be the DTFT of a signal x[n] which is known to be zero for n < 0 and n > 3. We know X(eja) for four values of N as follows. X(@j0) = 10, X(eja/2) = 5 – 5j, X(ejt) = 0, X(ej37/2) = 5 + 5j (a) (3 pts) Find x[n]. (Hint: Compute the IDFT) (b) (1 pts) Find X(ej?).
b) X-N(-8,12). Find: i P(X<-9.8) ii. P(X > -8.2) iii. P(-7< X <0.5)
Exercise 1 Let X be a random variable that has moment generating function My(t) = 0.5-t2-t Find P[-1<x< 1]
3. Let X N(20,1). What is P(X > 20) ? a) 0.25 b) 0.5 c) 0.75 d) 0.99
number? 10 3. Let X be a continuous random variable with a standard normal distribution. a. Verify that P(-2 < X < 2) > 0.75. b. Compute E(지)· 110]
In the exercise below, let U = {x|XE N and x < 10} A = {xx is an odd natural number and x < 10} B = {x x is an even natural number and x < 10} C = {x|XE N and 3 <x<5} Find the set. ВПС {4} {2, 4, 6, 8, 10) {1,2,3,4,5,6,7,8,9) {1,2,3,4,5,6,7,8,9,10)