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Leni [432]
3 years ago
13

Plz help me get the right answer

Mathematics
2 answers:
skad [1K]3 years ago
4 0
X^2-8x............that is right
Anastaziya [24]3 years ago
3 0
Uhhhhhhhhhhhhhh i think it’s 11x^2+8x?
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Find the general solution of the given higher-order differential equation. d3u dt3 + d2u dt2 − 2u = 0
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
3 years ago
What is the quotient when the polynomial 4x2 - 2x - 12 is divided by 2x - 4?
MrRa [10]
Tell me what x equals then I can awnser it do
4 0
3 years ago
Hi please help me with this please help me draw the graph pls
sukhopar [10]

{\huge {\green{ \fbox{\pink{Answer}}}}} \\  \\

A. 1) y ≤ x - 3

refer to the attachment

B. 2) y+2x>5

3 0
3 years ago
Is my answer right ? <br><br><br> Pls answer me. <br><br><br> Graphing in slope-intercept form.
saul85 [17]

No.

Step-by-step explanation:

It starts at the bottom (remember if you learned run, then take off to fly.) then the end is longer and higher.

7 0
3 years ago
A cube has a volume of 343 cubic cm. What is the area of the base
Amanda [17]

Answer:

49 cm²

Step-by-step explanation:

The volume (V) of a cube is calculated as

V = s³ ← s is the length of the side, thus

s³ = 343 ( take the cube root of both sides )

s = \sqrt[3]{343} = 7, thus

area of base = s² = 7² = 49 cm²

6 0
3 years ago
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