The Student Room Group

help with remembering domain and range (maths)

does anyone have any tips on how to remember domain and range? i always confuse between the two and constantly have to look at my notes to remind myself that domain is x and range is y (currently looking at my notes as i'm writing this lol)

please help a fellow student out i've learnt this like a year ago but i'm still confused

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Original post
by based_J
does anyone have any tips on how to remember domain and range? i always confuse between the two and constantly have to look at my notes to remind myself that domain is x and range is y (currently looking at my notes as i'm writing this lol)
please help a fellow student out i've learnt this like a year ago but i'm still confused
I suggest a rule of thumb as follows:
D comes before R in the alphabet, just like "x" comes before "y".
Domain ==> x (first)
Range ==> y (second)

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