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complex numbers
- Thread starter dianne35
- Start date
dianne35 said:I need serious help quick...my problem is 6x-2/5=-2+11yi i have what x equals im having problems with the y answer....this it what i have so far...6x=-2 x=-3 and 2/5=11y ..i need to know how to get y from here?
\(\displaystyle 11y=-\frac{2}{5}\)
\(\displaystyle 55y=-2\)
You need BASIC math help ~
dianne35 said:I need serious help quick...my problem is 6x-2/5=-2+11yi i have what x equals im having problems with the y answer....this it what i have so far...6x=-2 x=-3 and 2/5=11y ..i need to know how to get y from here?
Please re-check the problem to see if you've typed it correctly. As you typed it, there is NO term containing "i" on the left side. Did you perhaps mean 6x - (2/5)i = -2 + 11yi?
If you did, then 6x = -2.................but that does NOT give you x = -3.
And -2/5 = 11y and you can follow the process Aladdin outlined.
Hi Dianne,
you have some preliminary maths to review before solving this.
The first one being negative times positive is negative.
Think of positive by negative as successive subtraction or successively dropping in temperature.
-3-3 is -3 twice so it can be written 2(-3) and the answer is -6 because if we subtract 3 twice, we are subtracting 6.
(-2)(-3) can be thought of as doing the opposite of subtracting 3 twice, -{2(-3)}.
Subtraction is the opposite of addition and addition is the opposite of subtraction, that's why two minuses give a plus.
Also -2-(-5) is the difference between -2 degrees and -5 degrees (to find the difference, we subtract) and the answer is 3,
so we can write -2-(-5) is -2+5 or 5-2 = 3.
Also you must understand that complex numbers contain a real and imaginary part.
If two complex numbers are equal, the real parts are equal and the imaginary parts are also equal.
The square root of minus 1 is imaginary because no number exists such that if you square it, the answer is negative.
minus by minus and plus by plus are both plus.
But if the square root of minus 1 could exist (!!) then it's square would be -1 and -1 is called "i squared".
If the values you chose are correct, then y must be zero and 6x-2/5 = -2.
You need to check if 6x-2 is the numerator or if -2/5 is being subtracted from 6x.
The way you have it written, add 2/5 to both sides to get 6x = 2/5 - 2 = 2/5 - 10/5 = -8/5
so x would be -8/30 = -4/15
you have some preliminary maths to review before solving this.
The first one being negative times positive is negative.
Think of positive by negative as successive subtraction or successively dropping in temperature.
-3-3 is -3 twice so it can be written 2(-3) and the answer is -6 because if we subtract 3 twice, we are subtracting 6.
(-2)(-3) can be thought of as doing the opposite of subtracting 3 twice, -{2(-3)}.
Subtraction is the opposite of addition and addition is the opposite of subtraction, that's why two minuses give a plus.
Also -2-(-5) is the difference between -2 degrees and -5 degrees (to find the difference, we subtract) and the answer is 3,
so we can write -2-(-5) is -2+5 or 5-2 = 3.
Also you must understand that complex numbers contain a real and imaginary part.
If two complex numbers are equal, the real parts are equal and the imaginary parts are also equal.
The square root of minus 1 is imaginary because no number exists such that if you square it, the answer is negative.
minus by minus and plus by plus are both plus.
But if the square root of minus 1 could exist (!!) then it's square would be -1 and -1 is called "i squared".
If the values you chose are correct, then y must be zero and 6x-2/5 = -2.
You need to check if 6x-2 is the numerator or if -2/5 is being subtracted from 6x.
The way you have it written, add 2/5 to both sides to get 6x = 2/5 - 2 = 2/5 - 10/5 = -8/5
so x would be -8/30 = -4/15