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Mathematics 7 Online
OpenStudy (anonymous):

Quadratic question

OpenStudy (anonymous):

Yes?

OpenStudy (anonymous):

\[R=\frac{ -600\pm \sqrt{600^2-4(9500)(10600)} }{ 2(9500) }\]

OpenStudy (anonymous):

I got -6.58 and 8.76

OpenStudy (anonymous):

Alright. Does that not match with what the answer is supposed to be?

OpenStudy (anonymous):

Wait, how are you getting that?

OpenStudy (anonymous):

The discriminant is negative- there should be no roots.

OpenStudy (anonymous):

I use equation

OpenStudy (anonymous):

Yes, and I'm saying that if you plug it in right, you should get a Syntax Error.

OpenStudy (anonymous):

i got error now

OpenStudy (anonymous):

@phi

OpenStudy (anonymous):

What's the original equation?

OpenStudy (anonymous):

\[\frac{ -b \pm \sqrt{b-4(a)(c)} }{ 2(a) }\]

OpenStudy (anonymous):

b^2

OpenStudy (anonymous):

the second b

OpenStudy (anonymous):

Not the quadratic formula, the original quadratic equation that you got those values you're plugin in from

OpenStudy (anonymous):

\[\frac{ -600 - or +\sqrt{600^2-4(9500)(10600)} }{ 2(9500) }\]

OpenStudy (anonymous):

Yes, where are you getting those numbers from?

OpenStudy (anonymous):

9500x^2-600x+10600=0

OpenStudy (anonymous):

yeah, there are no roots to that equation.

OpenStudy (anonymous):

hun? so no answer ?

OpenStudy (anonymous):

Yes.

OpenStudy (anonymous):

Unless you made a mistake in an earlier step I'm unaware of.

OpenStudy (anonymous):

Oh NO!!!!!!!!!!!!!!! Its interest bond calculation and the answer should be interest number

OpenStudy (anonymous):

:(

OpenStudy (anonymous):

Tell me the WHOLE question.

OpenStudy (anonymous):

ok, you bought a two year coupon with face value of 10000 and 7% coupon rate at the beginning of this year. how much it is yield to maturity if paid $9700 coupons are paid annually

OpenStudy (anonymous):

I changed number 9500 to 9700

OpenStudy (anonymous):

Can you type it word for word? I can't understand a thing you're saying.

OpenStudy (anonymous):

it is homework question..

OpenStudy (anonymous):

ok could you solve this

OpenStudy (anonymous):

ok could you solve this\[9500=600/(i+1)+10600/(i+1)^2\]

OpenStudy (anonymous):

I know where you went wrong.

OpenStudy (anonymous):

It should be \[9500x^2-600x-10600\], where x = i+1. You put +10600

OpenStudy (anonymous):

Oh then the answer will be positive!

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