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28.10.2019 •
Mathematics
Find the square roots of each complex number.
a. 5 + 12i
b. 5 − 12i
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Ответ:
ANSWER:
Square root of 5 + 12i is 3+2i or -3 – 2i and square root of 5 – 12i is 3 – 2i or -3 + 2i.
SOLUTION:
Given, we have to find square roots of 5 + 12i and 5 – 12i
a) 5 + 12i
Now, square root of 5 + 12i
Suppose that a + bi is a square root of 5 + 12i.
Equate real and imaginary parts:
Since a must be real, a = 3 or -3.
This gives b = 2 or -2, respectively.
Thus, we have two square roots: 3+2i or -3-2i.
b) 5 - 12i
Now, square root of 5 - 12i
Suppose that a - bi is a square root of 5 - 12i.
Equate real and imaginary parts:
This gives b = 2 or -2, respectively.
Thus, we have two square roots: 3 - 2i or -3 + 2i.
Hence, square root of 5 + 12i is 3+2i or -3 – 2i and square root of 5 – 12i is 3 – 2i or -3 + 2i.
Ответ:
hi
Step-by-step explanation:
1,6,9,10,10,11,13,15,15,15
moda-10 and 15
median-10+11/2=10,5
mean-(1+6+9+10+10+11+13+15+15+15)÷10=105÷10=10,5
hope it helps
have a nice day