3 years ago

PLSSSSSSSSSSS HHELPP IM BEGGING YOU

2 answers:

7 0

Y=-1/4+4

(Y2-y1) (x2-x1)

4 0

Y=1/4+4 because it wants to be

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STALIN [3.7K]

$\dfrac{\mathrm d^3u}{\mathrm dt^3}+\dfrac{\mathrm d^2u}{\mathrm dt^2}-2u=0$

This ODE has characteristic equation

$r^3+r^2-2=(r^3-r)+(r^2+r-2)=r(r^2-1)+(r+2)(r-1)$

$=(r(r+1)+(r+2))(r-1)=(r^2+2r+2)(r-1)=0$

which has roots at $r=1,-1\pm i$ . Then the characteristic solution to the ODE is

$u(t)=C_1e^t+C_2e^{(-1+i)t}+C_3e^{(-1-i)t}$

$\implies\boxed{u(t)=C_1e^t+C_2e^{-t}\cos t+C_3e^{-t}\sin t}$

6 0

4 years ago

IRINA_888 [86]

If you multiply 5.06 by 47.058 you will get 238.11348

3 0

3 years ago

Maslowich

24+20=44
4(6+5)=44
the first one

8 0

3 years ago

Nonamiya [84]

200 milimeters is the answer

4 0

3 years ago

Tresset [83]

The answer would be 54. Because you start with 2.
2x3 = 6
6x3 = 18
18x3 = 54
Each month it triples so you continue
to add 3 to each result.

7 0

4 years ago