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Any Problems In Mathematics?
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Any Problems In Mathematics?
August 31, 2013 10:08:27pm
    Post: #1 
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Any Problems In Mathematics?
I am a Mathematics Major, you can ask me to help you do your assignments in mathematics, you can also ask me to answer a few problems that i can.. I can do algebra, trigonometry, geometry and calculus, some other subjects too sometimes. I can assure that there would be sense in my computations and not just a child's work..

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September 02, 2013 12:17:21pm
    Post: #2 
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thanks for consulting. i wont mention your name, but i hope this helps for others who might encounter the same problem..

Verify the following identity:
(1-cos(2 x))/(1+cos(2 x)) = tan(x)^2
Eliminate the denominator on the left hand side.
Multiply both sides by 1+cos(2 x):
1-cos(2 x) = tan(x)^2 (1+cos(2 x))
Express the right hand side in terms of sine and cosine.
Write tangent as sine/cosine:
1-cos(2 x) = ( (sin(x))/(cos(x)) ^2 ) (1+cos(2 x))
Simplify the right hand side.
(1+cos(2 x)) ((sin(x))/(cos(x)))^2 = ((1+cos(2 x)) sin(x)^2)/cos(x)^2:
1-cos(2 x) = (sin(x)^2 (1+cos(2 x)))/cos(x)^2
Eliminate the denominator on the right hand side.
Multiply both sides by cos(x)^2:
cos(x)^2 (1-cos(2 x)) = sin(x)^2 (1+cos(2 x))
Apply a power reduction formula to cos(x)^2.
cos(x)^2 = 1/2 (1+cos(2 x)):
(1+cos(2 x))/2 (1-cos(2 x)) = sin(x)^2 (1+cos(2 x))
Apply a power reduction formula to sin(x)^2.
sin(x)^2 = 1/2 (1-cos(2 x)):
((1-cos(2 x)) (1+cos(2 x)))/2 = (1-cos(2 x))/2 (1+cos(2 x))
Come to a conclusion.
The left hand side and right hand side are identical

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September 03, 2013 11:16:31am
    Post: #3 
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September 10, 2013 11:02:52am
    Post: #4 
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how to remember all the trigonometric formulas any tips

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September 10, 2013 1:36:52pm
    Post: #5 
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September 10, 2013 11:02:52ammech Wrote:  how to remember all the trigonometric formulas any tips


know the basics, all other problems come from the basics, if you don't know the first few identities you can't come up with those which are more complex.. love what you do and do what you want.
if you love somebody, consciously you try to know them more.
same goes with subjects, if you like the subject you will discover and learn more..

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September 19, 2013 12:37:59am
    Post: #6 
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Elisha You seem really great at math that first post was impressive so wow great job

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September 19, 2013 5:44:17am
    Post: #7 
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Wow u could be a great scientist in future well im not so great at math but i managed to pass math subject
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September 19, 2013 5:44:42am
    Post: #8 
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Wow u could be a great scientist in future well im not so great at math but i managed to pass math subject
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September 19, 2013 9:59:51am
    Post: #9 
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thank you guys, i'm just trying to help. and if you guys also need help you can count on me, i would try my best to solve anything. although i'm not as smart as you think..

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October 07, 2013 1:39:29pm
    Post: #10 
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Bumping up since there is somebody who needed help and wasn't able to help, sorry, I hope I should have seen your thread earlier.

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October 07, 2013 4:40:54pm
    Post: #11 
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what is mathematics?! lol :P
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October 08, 2013 8:48:03pm
    Post: #12 
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hmm are you completely done with calculus ill need help in derivatives Lol stuck :P
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October 08, 2013 9:36:16pm
    Post: #13 
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^^ Yay! I don't have a clue what calculus is! -.- Boo!
-------------------------
I'm in 6th, so.. But I am a star student, I have straight A's and some people could use grammar instead. I'll most likely overpass math in the future, since it's my favorite subject.

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October 09, 2013 8:41:30am
    Post: #14 
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well i hope grammar would be taught by somebody else in his/her thread..i'm sure some people need your help regarding that.

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October 14, 2013 7:48:38am
    Post: #15 
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elishagrace, can you teach me about shifting numbers from left to right?
like if i have an equation
2y+7y-9/4=4/9
When I shift 9/4 to right, what will it become? Can you tell me about that so I can understand?
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