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destineyburger2
25.10.2019 •
Mathematics
Pgeometryevaluate
a. 6!
b. 8p5
c. 12c4
Solved
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Ответ:
720
Work Shown:
6! = 6*5*4*3*2*1 = 720
The exclamation mark means factorial. You simply start with the given number 6 and count down til you get to 1. You multiply all of the numbers together.
Part B
6720
Work Shown:
Use the nPr formula to get...
nPr = (n!)/((n-r)!)
8P5 = (8!)/((8-5)!)
8P5 = (8!)/(3!)
8P5 = (8*7*6*5*4*3!)/(3!)
8P5 = 8*7*6*5*4
8P5 = 6720
Part C
495
Work Shown:
Use the nCr formula this time
n C r = (n!)/(r!(n-r)!)
12 C 4 = (12!)/(4!*(12-4)!)
12 C 4 = (12!)/(4!*8!)
12 C 4 = (12*11*10*9*8!)/(4!*8!)
12 C 4 = (12*11*10*9)/(4!)
12 C 4 = (12*11*10*9)/(4*3*2*1)
12 C 4 = (11880)/(24)
12 C 4 = 495
Ответ:
Discontinuity of function occurs when x = 4 or x = -4
zero of function is when x=0
Step-by-step explanation:
We are given:
f(x) = 4 - x/ x^2 - 16
Discontinuity of the function occur when the denominator is equal to zero.
So, we need to find the values of x that makes the denominator zero.
The denominator is x^2 - 16
x^2 - 16 =0
x^2 = 16
x = ± 4
So, if the value of x = 4 or value of x=-4 then the function will be discontinuous.
Zero of the function i.e f(x)=0
So, Putting the function equal to zero and finding the value of x
4(x) / x^2 - 16 = 0
4(x) = 0((x)^2 - 16)
4x = 0
x = 0
So, zero of function is when x=0