math
posted by Anonymous .
if the domain is the set of integers, the solution set of x^2 3x 4<0 is what?

What your question really asks for is,
"For what values of x does the corresponding parabola
y = x^2  3x  4 fall below the xaxis?"
let's find the xintercepts ....
x^2  3x  4 = 0
(x4)(x+1) = 0
x = 1 or x = 4
so the expression is < 0 for 1 < x < 4
or
(x+1)(x4) < 0
( x+1 >0 AND x4<0) OR ( x+1 < 0 AND x4>0)
( x>1 and x<4) OR (x<1 AND x > 4)
x>1 and x<4 OR (null set)
1 < x < 4 
thank you, so anything between 1 and 4 would be my answer? (0,1,2,3)?

yes.

Since your domain is integers, only the integers (0,1,2,3) satisfy the inequality. Otherwise, there would be an infinite number of noninteger solutions between 1 and 4.
Respond to this Question
Similar Questions

Math
The average of a set of five different positive integers is 360. The two smallest integers in the set are 99 and 102. What is the largest possible integer in this set? 
Math
The least integer of a set of consecutive integers is 48. if the sum of these integers is 49, how many integers are in the set? 
Math
The least integer of a set of consecutive integers is 25 if the sum of these integers is 26,how many integers are in this set? 
Maths
A give an example of a function whose domain equals the set of real numbers and whose range equals the set? 
11th grade mths
Please check urgently .I have to submit the assignment A give an example of a function whose domain equals the set of real numbers and whose range equals the set? 
Maths(please check urgently
Please check urgently .I have to submit the assignment A give an example of a function whose domain equals the set of real numbers and whose range equals the set? 
math
A set of integers has a sum of 420, and an average of 60. If one of the integers in the set is 120, what is average of the remaining integers in the set? 
SAT prep help
Set M consists of the consecutive integers from 15 to y, inclusive. If the sum of all the integers in set M is 70, How many numbers are in the set? 
SAT math
Set M consists of the consecutive integers from 15 to y, inclusive. If the sum of all the integers in set M is 70, How many numbers are in the set? 
math show work please
111/x+30/x^2=0 A.the solution set is ? B.The solution set is the set of real numbers or C. the solution set is an empty set