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sergiy2304 [10]
3 years ago
10

In a sequence is defined recursively by f(0)=3 and f(n+1)=-f(n)+5 for n≥ 0, then f(2) is eqaul to

Mathematics
1 answer:
dedylja [7]3 years ago
8 0

f(0) = 3 \\ \Rightarrow f(1) =  - f(0) + 5 =  - 3 + 5 = 2 \\ \Rightarrow f(2) =  - f(1) + 5 =  - 2 + 5 = 3

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Methods of solving distance between two points
e-lub [12.9K]

The distance formula is an algebraic expression used to determine the distance between two points with the coordinates (x1, y1) and (x2, y2).

<span><span>D=<span><span>(<span>x2</span>−<span>x1</span><span>)2</span>+(<span>y2</span>−<span>y1</span><span>)2</span></span><span>−−−−−−−−−−−−−−−−−−</span>√</span></span><span>D=<span>(<span>x2</span>−<span>x1</span><span>)2</span>+(<span>y2</span>−<span>y1</span><span>)2</span></span></span></span>

Example

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This problem is solved simply by plugging our x- and y-values into the distance formula:

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Sometimes you need to find the point that is exactly between two other points. This middle point is called the "midpoint". By definition, a midpoint of a line segment is the point on that line segment that divides the segment in two congruent segments.

If the end points of a line segment is (x1, y1) and (x2, y2) then the midpoint of the line segment has the coordinates:

<span><span>(<span><span><span>x1</span>+<span>x2</span></span>2</span>,<span><span><span>y1</span>+<span>y2</span></span>2</span>)</span><span><span>(<span><span><span>x1</span>+<span>x2</span></span>2</span>,<span><span><span>y1</span>+<span>y2</span></span>2</span>)</span><span>
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