Simmultaneous question that i got wrong...please be elaborate in your working out
Calculate the coordinate of the points or intersection of the straight line 2x+3y=10 and the curve 2/x + 3/y = 5
Original post by TumiZN
Calculate the coordinate of the points or intersection of the straight line 2x+3y=10 and the curve 2/x + 3/y = 5
Is this calculus
Original post by TumiZN
Calculate the coordinate of the points or intersection of the straight line 2x+3y=10 and the curve 2/x + 3/y = 5
Multiply both sides by xy
This means x and y are cancelled out., giving us
2x+3y=5xy
Minus -5xy from both sides,
Which gives us 2x+3y-5xy=0
Minus -3y from both sides
This gives us
2x-5xy=-3y
Then find the common factor, in this case on the left hand side, it is x.
so
x(2-5y) =-3y
Divide both sides by (2-5y)
x= -3y / 2-5y
Original post by the bear
We are not allowed to give full answers 
the thing is I already know the correct answers all I want to see is the proper working out so I can see where I went wrong
Original post by TumiZN
the thing is I already know the correct answers all I want to see is the proper working out so I can see where I went wrong
http://www.webmath.com
If you input the equations etc in there, it will give you a breakdown (yes, step by step!) so you can see where your going right/wrong
(edited 8 years ago)
Original post by TumiZN
the thing is I already know the correct answers all I want to see is the proper working out so I can see where I went wrong
all we can do is look at your version ?
Original post by apronedsamurai
http://www.webmath.com
If you input the equations etc in there, it will give you a breakdown (yes, step by step!) so you can see where your going right/wrong
If you input the equations etc in there, it will give you a breakdown (yes, step by step!) so you can see where your going right/wrong
thanks
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