# Aqa core 3: Finding the range!Watch

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Thread starter 4 years ago
#1
Hi people,

I really need help finding the range I've never found a set method that always works for example: f(x)= x^2-4/3 for real values of x where x less than or equal to 0.

struggling so any guidance will be appreciated

thanks
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4 years ago
#2
Sorry you've not had any responses about this. Are you sure you’ve posted in the right place? Posting in the specific Study Help forum should help get responses.

I'm going to quote in Puddles the Monkey now so she can move your thread to the right place if it's needed.

Spoiler:
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(Original post by Puddles the Monkey)
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0
4 years ago
#3
(Original post by Saltedcaramel1)
Hi people,

I really need help finding the range I've never found a set method that always works for example: f(x)= x^2-4/3 for real values of x where x less than or equal to 0.

struggling so any guidance will be appreciated

thanks
The range of the function is the set of possible outputs, given the input.
In your example, can you find the minimum value of the function?
What about a maximum?
By appealing to the continuity of the function, you get that the function then takes every value in between.
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