I went to mathamadics.com it gave me all my answers to that type of question
Answer:
1,3,4
Step-by-step explanation:
Your first line goes through the <u>very center</u>, and is a <u>positive slope</u> therefore it only goes through two quadrants the first and the third your second line is on a <u>negative y axis</u> but since it still has a <u>positive slope</u> it goes through quadrants 1,3,4
We will see that f'(x) > 0, which means that f(x) is an increasing function.
<h3>
How to prove that the function is increasing?</h3>
For any function f(x), if f'(x) > 0, then f(x) is increasing for any value of x.
Here we have the cubic function:
f(x) = x³ + 4x
If we differentiate this, we get:
f'(x) = df(x)/dx = 3x² + 4.
And notice that x² is always positive, then f'(x) > 0, which means that f(x) is an increasing function.
If you want to learn more about cubic functions:
brainly.com/question/20896994
#SPJ1
Answer:
The two numbers are 7 and 11.
Step-by-step explanation:
x represent the first number.
y represent the second number.
x + y = 18
x - y = 4
2x = 22
x = 11
x - y = 4
(11) - y = 4
y = 7
