Question details:
consider a
sets={a1,a2,a3,a4,}and
a
setb={x1,x2,}.prove
that the
number of surjective mappings(ontofunctions) from a to b
is given by coefficient of
xr in the expansion
r! (ex-1)n.

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

answer: yes, since the line has a steeper rate of change than the exponential the y-values will be greater and they will only intersect one time.

1st part is 64,000,000

2nd part 500,000

step-by-step explanation: