Show that the set E = {2,4,6,...} = {2k : k ∈ N} is countably infinite.
14. Find a function f : R → R, and sets A,B ⊂ R where f(...
$\sqrt{(x+6)}$ /(6+x)>=0
write domain in interval notation
47÷5
2670÷1
Find the integrating factor for the differential equation 3y xy3 dx 2x x2 y2 dy 0
which is of the form , a b F x y...
Use the appropriate compound interest formula to compute the balance in the account after the stated period of time
8i-j=15
i-3j=-5
2j-10k=35 solve i,j,k