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krek1111 [17]
3 years ago
15

Which expressions are equivalent to the one below? Check all that apply.

Mathematics
1 answer:
Aleksandr [31]3 years ago
5 0

Answer:

D

Step-by-step explanation:

(5·5)*x = 25*x =25^x

the rest are wrong

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bagirrra123 [75]
\bf r\left[ cos\left(  \theta \right)+i\ sin\left( \theta  \right) \right]\quad 
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x=rcos(\theta )\\
y=rsin(\theta )
\end{cases}\implies 
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x&,&y\\
a&&b
\end{array}\implies a+bi\\\\
-------------------------------\\\\
2\left[ cos\left(  135^o\right)+i\ sin\left( 135^o\right) \right]\impliedby r=2\qquad \theta =135^o
\\\\\\
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\bf -------------------------------\\\\
3\left[ cos\left(  120^o\right)+i\ sin\left( 120^o\right) \right]\impliedby r=3\qquad \theta =120^o
\\\\\\
3\left( -\frac{1}{2} \right)+i\ 3\left( \frac{\sqrt{3}}{2}\right)\implies -\frac{3}{2}+\frac{3\sqrt{3}}{2}\ i

\bf \\\\
-------------------------------\\\\
5\left[ cos\left(  \frac{5\pi }{4}\right)+i\ sin\left( \frac{5\pi }{4}\right) \right]\impliedby r=5\qquad \theta =\frac{5\pi }{4}
\\\\\\
5\left( -\frac{\sqrt{2}}{2} \right)+i\ 5\left( -\frac{\sqrt{2}}{2}\right)\implies -\frac{\sqrt{2}}{2}-\frac{\sqrt{2}}{2}\ i

\bf -------------------------------\\\\
4\left[ cos\left(  \frac{5\pi }{3}\right)+i\ sin\left( \frac{5\pi }{3}\right) \right]\impliedby r=4\qquad \theta =\frac{5\pi }{3}
\\\\\\
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