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Tutors Answer Your Questions about Complex Numbers (FREE)
Question 236214: Hello,
I'm to find the third roots of 343i written in polar form with arguments in radians. I don't know how to approach this one. Is it actually "0 + 343i"? If so, I find the absolute value to be 343. Then tan (b/a) = tan (343/0) which is undefined. How do I find the angles?
Please help me as I'm lost...
Click here to see answer by Alan3354(5863)   |
Question 235915: Show a complete solution.
Big plane. A six-passenger plane cruises at 180 mph in
calm air. If the plane flies 7 miles with the wind in the
same amount of time as it flies 5 miles against the wind,
then what is the wind speed?
Click here to see answer by checkley77(6671)  |
Question 235444: This is a word problem, I am terrible with word problems.
After leaving Moose Jaw, Hanson drove
200 kilometers at x km/hr and then decreased his speed by
20 km/hr and drove 240 additional kilometers. Make a table
like the one in Exercise 87.Write a rational expression for
his total traveling time. Evaluate the expression for x = 100.ms.
Click here to see answer by josmiceli(2979) |
Question 235195: I think that my problem falls under this topic. I am in Algebra 2 and I am stuck on this one problem. Solving Systems of Equations in Three Variables.
Here's the problem:
1.)2x-y+z=1
2.)x+2y-4z=3
3.)4x+3y-7z=-8
So here's what I tried to do:
First, I put equations 1 and 2 together and used the elimination method and I got -5y+9z=-5
so that would be the 4th equation
Then, I put equations 2 and 3 together and used elimination again and got -5y+9z=-20
which would be the 5th equation
I tried to put equations 4 and 5 together since they had like terms but it just didn't seem to work out well at all. Asking for your help and thanking you in advance, bthnydyson
Click here to see answer by ankor@dixie-net.com(6567)  |
Question 234630: Rachel spent $16.18 for some cans of dog food cost in 79 cents each and some cans of cat food costing 69 cents each. She bought two more cans of cat food than of dog food. How many cans of each did she buy?
Click here to see answer by stanbon(25959) |
Question 233419: The expression(-1+i)^3 is equivalent to
(1) -3i
(2) -2-2i
(3) -1-i
(4) 2+2i
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please choose the correct answer choice and explain how to get the answer
Thank you
Click here to see answer by Alan3354(5863) |
Question 233417: If a and b are real numbers, then the product of a+bi and a-bi is
(1) always imaginary
(2) always a real number
(3) sometimes,but not always, a real number
(4) sometimes,but not always, imaginary
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Please help choose the correct answer choice and please explain how to get the answer Thank you
Click here to see answer by stanbon(25959) |
Question 232820: Which of the following expressions is equal to 0
(1)i^2+i+4
(2)i^2-i^4
(3)i^2*i^4
(4)i^4/i^2
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Please solve and explain how you got the answer
Thank you
Click here to see answer by Alan3354(5863) |
Question 232819: For all a and b, the additive invers of the complex number a+bi is
(1) a-bi
(2)-a+bi
(3)-a-bi
(4)1/a+bi
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Please solve and explain how to reach the answer
Thank you
Click here to see answer by rapaljer(3526) |
Question 232818: Which of the following statments are always true?
(1) The sum of two imaginary numbers is an imaginary number
(2) A real number is a complex number
(3) A complex number is an imaginary number
(4) The product of two imaginary numbers is a real number
--------------------------------------------------------------------------------Please answer the question and explain how to get the answer :) Thank you
Click here to see answer by Alan3354(5863) |
Question 232818: Which of the following statments are always true?
(1) The sum of two imaginary numbers is an imaginary number
(2) A real number is a complex number
(3) A complex number is an imaginary number
(4) The product of two imaginary numbers is a real number
--------------------------------------------------------------------------------Please answer the question and explain how to get the answer :) Thank you
Click here to see answer by rapaljer(3526) |
Question 232815: 1. If a and b are real numbers, then the product of a+bi and a-bi is
(1) Always imaginary
(2) Always a real number
(3) Somtimes, but not always, a real number
(4) Somtimes, but not alwaus, imaginary
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Please help me with this question and explain how you got the answer thank you
Click here to see answer by jsmallt9(511) |
Question 232815: 1. If a and b are real numbers, then the product of a+bi and a-bi is
(1) Always imaginary
(2) Always a real number
(3) Somtimes, but not always, a real number
(4) Somtimes, but not alwaus, imaginary
--------------------------------------------------------------------------------
Please help me with this question and explain how you got the answer thank you
Click here to see answer by Alan3354(5863) |
Question 232815: 1. If a and b are real numbers, then the product of a+bi and a-bi is
(1) Always imaginary
(2) Always a real number
(3) Somtimes, but not always, a real number
(4) Somtimes, but not alwaus, imaginary
--------------------------------------------------------------------------------
Please help me with this question and explain how you got the answer thank you
Click here to see answer by rapaljer(3526) |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935
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