2 years ago

I need help with this geometry question...

Mathematics

1 answer:

lyudmila [28]2 years ago

4 0

Answer:

go back and try agian good

Step-by-step explanation:

You might be interested in

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

2 years ago

Peter's dog eats 0.3 kilograms of dog food each day. How much dog food will Peter's dog eat

11111nata11111 [884]

All you have to do is multiply 0.3 by 8.

8×0.3=2.4

The dog will eat 2.4 kilograms of food in 8 days. Hope that helps!

8 0

2 years ago

Read 2 more answers

I don’t understand this at all someone please help

olasank [31]

Answer:

15-9=

6 ok I don't know if it's correct

5 0

2 years ago

Given vectors u = (-3, 2) and v = (2, 1), what is the measure of the angle between the vectors?

BaLLatris [955]

Answer:

C) 119.7°

Step-by-step explanation:

got it right on edge :)

3 0

2 years ago

Read 2 more answers

Given the function f(x) =2x+5 what would the output be with an input of 6?

Travka [436]

The output would be 17

6 0

2 years ago