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jasenka [17]
2 years ago
6

OP - Operations with Polynomials Discussion

Mathematics
1 answer:
Setler [38]2 years ago
5 0

Explanation:

<h3>S + T = R</h3>

Suppose we define ...

  a(x) = 2x, for 0 ≤ x ≤ 1

  b(x) = x^2, for 0 ≤ x ≤ 1

Then we have the following:

  c(x) = a(x) +b(x) = 2x +x^2, for 0 ≤ x ≤ 1

  S = max(a(x)) = a(1) = 2

  T = max(b(x)) = b(1) = 1

  R = max(c(x)) = c(1) = 2 +1 = 3

This value of R satisfies S + T = R.

We note that for x=p=1, we have S = a(p), T = b(p), and R = c(p). The first attachment illustrates this case.

__

<h3>S + T ≠ R</h3>

Suppose we define ...

  a(x) = x, for 0 ≤ x ≤ 1

  b(x) = 1 -x^2, for 0 ≤ x ≤ 1

  c(x) = a(x) +b(x) = x + 1 -x^2, for 0 ≤ x ≤ 1

Then we have the following:

  S = max(a(x)) = a(1) = 1

  T = max(b(x)) = b(0) = 1

  R = max(c(x)) = c(0.5) = 1.25 ≠ 1 + 1 = 2

This value of R does not satisfy S + T = R.

We note that for p, q, r we have S = a(p), T = b(q), R = c(r) and p≠q≠r. The second attachment illustrates this case.

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