Yahoo Answers: Answers and Comments for Find the minimum & maximum of cos^2X? [Mathematics]
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From Christopher
enUS
Mon, 30 Oct 2017 17:47:23 +0000
3
Yahoo Answers: Answers and Comments for Find the minimum & maximum of cos^2X? [Mathematics]
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https://answers.yahoo.com/question/index?qid=20171030174723AANTI2A
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From mizoo: 1 ≤ cos x ≤ 1
(1)^2 ≤ cos x ≤ 1^2
0 ≤ cos^2 ...
https://answers.yahoo.com/question/index?qid=20171030174723AANTI2A
https://answers.yahoo.com/question/index?qid=20171030174723AANTI2A
Mon, 30 Oct 2017 17:49:20 +0000
1 ≤ cos x ≤ 1
(1)^2 ≤ cos x ≤ 1^2
0 ≤ cos^2 x ≤ 1
minimum value: 0
maximum value: 1

From Raymond: soc^2(x)
is the same as
(cos(x))^2
a square i...
https://answers.yahoo.com/question/index?qid=20171030174723AANTI2A
https://answers.yahoo.com/question/index?qid=20171030174723AANTI2A
Mon, 30 Oct 2017 17:50:47 +0000
soc^2(x)
is the same as
(cos(x))^2
a square is NEVER negative. Therefore, if it is possible for cos(x) to equal zero, then zero must be your minimum.
cos(x) does have a positive maximum and a "negative maximum" (normally called a minimum).
Find the one that has the highest absolute value (in this case, it does not matter, since they both have the same absolute value).
Now, square that value, and that will be the maximum of (cos(x))^2
Just remember that the square of 1 is +1.

From John Johnson: soc^2(x)
is the same as
(cos(x))^2
a squar...
https://answers.yahoo.com/question/index?qid=20171030174723AANTI2A
https://answers.yahoo.com/question/index?qid=20171030174723AANTI2A
Tue, 31 Oct 2017 01:00:14 +0000
soc^2(x)
is the same as
(cos(x))^2
a square is NEVER negative. Therefore, if it is possible for cos(x) to equal zero, then zero must be your minimum.
cos(x) does have a positive maximum and a "negative maximum" (normally called a minimum).
Find the one that has the highest absolute value (in this case, it does not matter, since they both have the same absolute value).
Now, square that value, and that will be the maximum of (cos(x))^2
Just remember that the square of 1 is +1.

From Sourav: min=0. max=1
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https://answers.yahoo.com/question/index?qid=20171030174723AANTI2A
Mon, 30 Oct 2017 18:03:35 +0000
min=0. max=1

From cidyah: Minimum of cos x = 1
Maximum of cos x = 1
co...
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https://answers.yahoo.com/question/index?qid=20171030174723AANTI2A
Mon, 30 Oct 2017 17:54:09 +0000
Minimum of cos x = 1
Maximum of cos x = 1
cos^2 x = cos x * cos x
Minimum of cos^2 x = 0
Maximum of cos^2 x = 1