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You are not logged in. #1 20120730 18:12:59
Help with qudratic equationHi all I am having problem with this qudratic equation with signs ,or I am doing something silly ,its all about square root of complex number. Eq 2 We can write Eq 2 as Now we can write Eq 1 as Is my last equation correct? (I hope so),if yes please solve it using qudratic formula ,as far you can I have did it but my answer is not matching with correct answer got from other process.The sign is not matching but yes if I write the last equation like this ,my answer matches. Thanks Debjit Roy ___________________________________________________ The essence of mathematics lies in its freedom  Georg Cantor #2 20120730 18:20:21
Re: Help with qudratic equationHi debjit625 The limit operator is just an excuse for doing something you know you can't. “It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman “Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment #3 20120730 18:26:24
Re: Help with qudratic equationNo you didnt got my problem ,I know that I am solving for y^2,and after solving for y^2 I have to remove the square,The problem is different just solve it and I will tell it about... Debjit Roy ___________________________________________________ The essence of mathematics lies in its freedom  Georg Cantor #4 20120730 18:34:44
Re: Help with qudratic equationHi debjit625 The limit operator is just an excuse for doing something you know you can't. “It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman “Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment #5 20120730 18:49:29
Re: Help with qudratic equationOk before you guys think too much let me tell you where I got this from...as I said its about square root fo a complex number and its square root be c Then So  Eq1  Eq 2 Now every where they (in books,resource,etc) find x using quadratic formula, and after that they substitute x in Eq2 to find y.But what I am doing is I am trying to find y using quadratic formula ,but my signs(+/) doesn’t matches. I think its math and what process we take it doesn’t matters ,the answer will be always same. I must be doing something very very silly...which is not coming into my mind right now but it will come later it always happens with me. Debjit Roy ___________________________________________________ The essence of mathematics lies in its freedom  Georg Cantor #6 20120730 18:55:44
Re: Help with qudratic equationHi debjit625 The limit operator is just an excuse for doing something you know you can't. “It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman “Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment #7 20120730 18:56:29
Re: Help with qudratic equationanonimnystefy yes what you got I also got that using that equation,but things changes when I use The correct answer will be And thanks for reply Last edited by debjit625 (20120730 18:58:11) Debjit Roy ___________________________________________________ The essence of mathematics lies in its freedom  Georg Cantor #8 20120730 19:00:13
Re: Help with qudratic equationHi debjit625 Last edited by anonimnystefy (20120730 19:01:51) The limit operator is just an excuse for doing something you know you can't. “It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman “Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment #9 20120730 19:24:15
Re: Help with qudratic equation
No the minus will not work in this case , as we are finding y^2 and y^2 cant be negative. And the correct answer for x and y in my book and every where else is Another thing I want to say,when I write the equation to this,i.e.. moving the equation from one side to another I get correct answer.Is here I am doing something wrong? Last edited by debjit625 (20120730 19:27:52) Debjit Roy ___________________________________________________ The essence of mathematics lies in its freedom  Georg Cantor #10 20120730 19:46:59
Re: Help with qudratic equationMoving everything shouldn't change anything. The limit operator is just an excuse for doing something you know you can't. “It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman “Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment #11 20120730 19:58:37
Re: Help with qudratic equationOk ,I was going to ask to you to show the steps but suddenly I realized that I have got it... Debjit Roy ___________________________________________________ The essence of mathematics lies in its freedom  Georg Cantor #12 20120730 20:35:23
Re: Help with qudratic equationYou're welcome. But I am sure you are not crazy. The limit operator is just an excuse for doing something you know you can't. “It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman “Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment 