4. Use a proof by contradiction to show that the square root of
3 is irrational. You may use the following fact: For any integer k,
if k2 is a multiple of 3, then k is a multiple of 3. Hint: The
proof is very similar to the proof that √2 is irrational.
5. Use a direct proof to show that the product of a rational
number and an integer must be a rational number.
6. Use a proof by...
Do not use Pumping Lemma for Regular Expression to prove the
following. You may think of Closure Properties of Regular
Languages
1. Fix an alphabet. For any string w with |w| ≥ 2, let middle(w)
be the string obtained by removing the first and last symbols of w.
That is, Given L, a regular language on Σ, prove that f1(L) is
regular, where
f1(L) = {w : middle(w) ∈ L}
Problem 4 ..... you can use Matlab
Using the same initial code fragment as in Problem 1, add code
that calculates and plays y (n)=h(n)?x (n) where h(n) is the
impulse response of an IIR bandstop filter with band edge
frequencies 750 Hz and 850 Hz and based on a 4th order Butterworth
prototype. Name your program p3.sce
the below is the Problem 1 initail code .. you can use it
Matlab
The following cilab code generates a 10-second “chirp”...
1.- Prove that the set of irrational numbers is uncountable by
using the Nested Intervals Property.
2.- Apply the definition of convergent sequence, Ratio Test or
Squeeze Theorem to prove that a given sequence converges.
3.- Use the Divergence Criterion for Sub-sequences to prove that
a given sequence does not converge.
Subject: Real Analysis