In how many ways can one write the numbers 1, 2, 3, 4, 5, and 6 in a row so that given any number in the row, all of its divisor
1 answer:
Answer: 25 ways.
Step-by-step explanation:
first we have 1,2,6. this can appear once.
4, can appear in twice.
- 3 can appear in-between 2 and 6, this means 3 can appear 3times before 6.
- 5 would appear 5 times.
- after 6 3 can appear 2 more times.
by not including itself, an appearing on the left side. one number can be written 25ways
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The equation of a circle is:
(x - h)² + (y - k)² = r²
The equation of a parabola is:
(x - h)² = 4p(y - k)
The equation of an ellipse is:
where variables a and b and the two different measurements of the vertices
The equation of a hyperbola is:
if it is with a horizontal transverse axis
if it is with a vertical transverse axis
Notice these have a subtraction operation, the exact opposite ellipse.
(x - h)² + (y - k)² = r²
The equation of a parabola is:
(x - h)² = 4p(y - k)
The equation of an ellipse is:
where variables a and b and the two different measurements of the vertices
The equation of a hyperbola is:
Notice these have a subtraction operation, the exact opposite ellipse.
Answer:
f^(-1)(x) = \frac{-1}{5} (x+4)
Step-by-step explanation:
Given is a function
To find its inverse.
We must check whether f is one to one or onto first
If -5x1-4 = -5x2-4 we get x1=x2
Hence f is one to one
Also for every f(x) we can find a x so f is onto.
So inverse exists
Let
Replace x by f inverse and y by x