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#1 2012-12-01 23:19:33
- unlucky guy
- Guest
proving identities
my teacher is evil and won't explain everything. he wants brides and stuff like that... he gave only one easy example about trigonometric function and gave 48 exercises as a homework including problems.
please can u help me with this one...
prove that sin t + sec t = tan t is not an identity. and please with little bit more explanation about how you solving
#2 2012-12-01 23:42:43
- bobbym
- Administrator
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Re: proving identities
Hi unlucky guy;
One of the easiest ways is to find an obvious counterexample:
so sec(0) is 1 / 1 because cos(0) is 1.
because
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#4 2012-12-02 00:06:34
- bobbym
- Administrator
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Re: proving identities
Hi;
Please let me know what your evil teacher thinks of it. He sounds like a moderator I know on another forum. If they are the same, he will absolutely hate my answer...
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
im sure#6 2012-12-02 07:17:35
- bobbym
- Administrator
Offline
Re: proving identities
Hi;
Okay, good luck then and welcome to the forum.
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.