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Llana [10]
3 years ago
5

What is (-i)^3 PLEASE HELP

Mathematics
2 answers:
Oduvanchick [21]3 years ago
7 0
A is the correct answer

Good Luck!
snow_lady [41]3 years ago
6 0

Answer:

a

Step-by-step explanation:

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Select the letter of the correct answer. A museum in South Africa uses paintings of right-angled triangles to teach children abo
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Evaluate the following equation when I =17 and w = 12 for 21 +2w
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Simplify the expression 18+3(9f-13)​
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Brooks Middle School ordered 712 pizzas on Monday for lunch. The teachers ate 13 of the pizzas for lunch. How many pizzas did th
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3 0
3 years ago
Find the solution r(t)r(t) of the differential equation with the given initial condition: r′(t)=⟨sin9t,sin6t,9t⟩,r(0)=⟨4,6,3⟩
klemol [59]

\mathbf r'(t)=\langle\sin9t,\sin6t,9t\rangle


\mathbf r(t)=\displaystyle\int\mathbf r'(t)\,\mathrm dt


\mathbf r(t)=\left\langle\displaystyle\int\sin9t\,\mathrm dt,\int\sin6t\,\mathrm dt,\int9t\,\mathrm dt\right\rangle


\displaystyle\int\sin9t\,\mathrm dt=\frac19\cos9t+C_1

\displaystyle\int\sin6t\,\mathrm dt=\frac16\cos6t+C_2

\displaystyle\int9t\,\mathrm dt=\frac92t^2+C_3


With the initial condition \mathbf r(0)=\langle4,6,3\rangle, we find


\dfrac19\cos0+C_1=4\implies C_1=\dfrac{35}9

\dfrac16\cos0+C_2=6\implies C_2=\dfrac{35}6

\dfrac92\cdot0^2+C_3=3\implies C_3=3


So the particular solution to the IVP is


\mathbf r(t)=\left\langle\dfrac19\cos9t+\dfrac{35}9,\dfrac16\cos6t+\dfrac{35}6,\dfrac92t^2+3\right\rangle

4 0
3 years ago
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