Answer:
Euler's method is a numerical method used in calculus to approximate a particular solution of a differential equation. As a numerical method, we have to apply the same procedure many times, until get the desired result.
In first place, we need to know all the values the problem is giving:
- The step size is 0.2; h = 0.2. This step size is a periodical increase of the x-variable, which will allow us to calculate each y-value to each x.
- The problem is asking the solution y(1), which means that we have to find the y-value assigned for x = 1, through the numerical method.
- The initial condition is y(0) = 9. In other words, .
So, if the initial x-value is 0, and the step size is 0.2, the following x-value would be: ; then ; ; and so on.
Now, we have to apply the formula to find each y-value until get the match of , because the problem asks the solution y(1).
According to the Euler's method:
Where , and ; .
Replacing all values we calculate the y-value assigned to :
.
Now, , . We repeat the process with the new values:
Then, we repeat the same process until get the y-value for , which is , round to four decimal places.
Therefore, .
To factorise it start with putting the xs in brackets.
(x )(x )
Then you must find 2 numbers which multiply to +81 and sum to -18.
81 is the product of 9×9 or -9×-9.
9+9=+18
-9+-9=-18
So they two numbers must be -9.
So factorised it is (x-9)(x-9) or (x-9)^2
Answer:
Circumference = 3.1415 (pi) x diameter
44 = 3.1414 x diameter
Diameter = 14.006 or 14 (approximately)
Hope this helped : )
A coefficient is the number before the variable so the coefficient of x would be number before the x. the number before x is A.-9