is 1/x-y the same thing as 1/x - 1/y?
回答 (5)
2017-09-11 11:36 am
No, 1/(x - y) is not the same as (1/x) - (1/y).
When x = 2 and y = 3 :
1/(x - y) = 1/(2 - 3) = -1
(1/x) - (1/y) = (1/2) - (1/3) = 1/6
Hence, 1/(x - y) ≠ (1/x) - (1/y)
When x = 2 and y = 3 :
1/(x - y) = 1/(2 - 3) = -1
(1/x) - (1/y) = (1/2) - (1/3) = 1/6
Hence, 1/(x - y) ≠ (1/x) - (1/y)
2017-09-11 11:56 am
No, it is [1/x] - y
2017-09-11 11:51 am
1/x - y ≠ 1/x - 1/y
try x=1, y=2, -1≠1/2
if you meant 1/(x-y)
1/(x-y) ≠ 1/x - 1/y
try x=2, y=1
1≠-1/2
So no.
try x=1, y=2, -1≠1/2
if you meant 1/(x-y)
1/(x-y) ≠ 1/x - 1/y
try x=2, y=1
1≠-1/2
So no.
2017-09-11 11:49 am
No.
2017-09-11 11:43 am
as typed you have 1 / x - y/1 and 1 / [ x- y ] cannot be rewitten
收錄日期: 2021-04-18 17:53:21
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