All Answers 358180 Answers

0

This is the method I'm using:

http://www.sefsc.noaa.gov/docs/NOAA_TechMemo_NMFS-SEFC-215.pdf

GuestNov 2, 2012

+3146

0

[input]1/2+2 1/3[/input]

adminNov 2, 2012

Nov 1, 2012

+3146

0

[input]solve( (3+i)^3 + p*(3+i)^2 + 40*(3+i) + q = 0, q)[/input]

q=(-((6*i+8)*p)-(66*i))-138
p and q are real, so q= "(-((6*i+8)*p)-(66*i))-138" has to be real. because of "-(66*i)", the term "-((6*i+8)*p)" needs an imaginary part of +(66*i).

so p is -11.
(-((6*i+8)*p)-(66*i))-138 = (-((6*i+8)*(-11))-(66*i))-138 = -50
p = -11 and q = -50

[input]z^3 + -11*z^2 + 40z - 50 = 0[/input]
three solutions:
{z=3-(1*i), z=3+1*i, z=5}

susie:
Write down the other root of the equation.

adminNov 1, 2012

Oct 31, 2012

+3146

0

adminOct 31, 2012

0

sepp:
the problem is... uuuhhm.. YOU!

GuestOct 31, 2012

+23

0

[input]sqrt(a)+sqrt(b)[/input]

sohaibOct 31, 2012

+23

0

[input]4x-12sqrt(x)+9=0[/input]

sohaibOct 31, 2012

0

[input][/input]

GuestOct 31, 2012

0

el tercer lado toma valore entre 3 y 27 esto es : 3<a<27
saludos

GuestOct 31, 2012

0

alexisgo:
[inputrad][inputrad][/inputrad][/inputrad]

GuestOct 31, 2012

Oct 30, 2012

0

5n+7=5n+7 true.

GuestOct 30, 2012

0

The answer is 12

GuestOct 30, 2012

0

The answer is 12

GuestOct 30, 2012

0

GuestOct 30, 2012

0

-2 would be multiplied by 1 and positive 2 woiuld be multiplied by 0((-2*1)+(2*0)=-2+0) which would equal -2

GuestOct 30, 2012

+3146

0

[input]15x^4+29x^3+521x^2=31x+70[/input]

adminOct 30, 2012

0

you have to berechnen:

m = (delta)Y / (delta)x

GuestOct 30, 2012

0

the problem is... uuuhhm.. YOU!

GuestOct 30, 2012

0

it's true .thank.you.but.i.have.a.rule........ax+bsqrt(x)+c=0
x1=(b²-b*sqrt(Δ))/2(a)²-c/a
x2=(b²+b*sqrt(Δ))/2(a)²-c/a
Δ=b²-4ac

GuestOct 30, 2012

0

(a+b+c)²is.not....a²+b²+c².....its.(a+b+c)*(a+b+c)

GuestOct 30, 2012

0

15!

(x-8)x3=21

GuestOct 30, 2012

Oct 29, 2012

0

4x + 9 = 12*sqrt(x)
16x ² + 72x + 81 = 144x
16x ² - 72x + 81 = 0
Now it's a quadratic equation, and you can solve it with the simplified formula.

GuestOct 29, 2012

0

GuestOct 29, 2012

Oct 28, 2012

+2

0

Askalu1984Oct 28, 2012

0

Calculate the following, The bureau of labor statistics announced that in April 2010, of all adult Americans, 139, 455, 000 were employed, 15, 260, 000 were unemployed, and 82, 614, 000 were not in the labor force.
e. The adult population-139,455,000
f. the labor force-56.841.00
g. the labor force participation rate
h. the unemployment rate

GuestOct 28, 2012

0 Online Users