Let us consider the function given. It is
. The coefficient of x (here 1/2) gives the frequency of the curve. What this means is that we see 1/2 a cycle between x=0 and x=
. Put another way, to see a full cycle we would need
. The period of the function given is
.
Let us think about a cycle of cosine. It starts (x=0) and ends (
) its cycle at its highest value (here f(x)=1). It is at it's lowest (here f(x)=-1) in the middle (
) it is between the highest and the lowest that it crosses the x-axis.
That is, it has an x-intercept between 0 and
That is, at
The next one comes between
and
. That is, at
The attached shows the function and it's x-intercepts. You can see that they occur at:
. This is the arithmetic sequence that contains the x-intercepts of the function.
As you can see the nth zero will occur at
Answer:
become friends with him then I dunno i guess tell him
Answer:
<u>Subjective probability</u>
Step-by-step explanation:
At first we should know the following:
Classical probability ⇒ when there are n equally likely outcomes.
Subjective probability ⇒ is based on whatever information is available.
Empirical probability ⇒ when the number of times the event happens is divided by the number of observations.
<u>So, according to the previous definitions:</u>
This person has a 75% chance of a full recovery
There is no equally likely outcomes, and the percentage of full recovery is based on the information available about the person and also it is based on educated guess.
So, this is <u>Subjective probability</u>
Cross multiply the numbers in the matrix:
1 *2 + 5*x = -13
Simplify:
2 + 5x = -13
Subtract 2 from both sides:
5x = -15
Divide both sides by 5
X = -15/5
X = -3
Because it’s absolute value it needs to be positive so x = 3