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Maths - what does f(x) mean?
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chanandler
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#1
I need to know what f(x) means and why we use it in maths? I'm really stuck.
Thanks in advance
Thanks in advance
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Mustard-man
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#2
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#2
'function of x'
f(x) basically means y, and f'(x) means dy/dx
The x can have a value, so for example, f(x) = 2x + 1, then f(1) = 3
that is as good as I can explain it!!!
f(x) basically means y, and f'(x) means dy/dx
The x can have a value, so for example, f(x) = 2x + 1, then f(1) = 3
that is as good as I can explain it!!!
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Mustard-man
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#3
Sasuke!
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*River
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#5
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#5
(x) is the basic equation of the graph, say, x² + 4x +4.
The F is what you are doing to it, eg translating it up 2, or stretching it etc. There are equations for this but I've forgotten them!
The F is what you are doing to it, eg translating it up 2, or stretching it etc. There are equations for this but I've forgotten them!
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Niaya
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#6
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#6
(Original post by gordon2002)
'function of x'
f(x) basically means y, and f'(x) means dy/dx
The x can have a value, so for example, f(x) = 2x + 1, then f(1) = 3
that is as good as I can explain it!!!
'function of x'
f(x) basically means y, and f'(x) means dy/dx
The x can have a value, so for example, f(x) = 2x + 1, then f(1) = 3
that is as good as I can explain it!!!
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Chewwy
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#7
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#7
remember the little function boxes you did when you were like 10. x goes in, f(x) comes out. the function could be, say, adding 5, dividing by two... whatever.
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AlphaNumeric
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#8
(Original post by heninacoop)
(x) is the basic equation of the graph, say, x² + 4x +4.
The F is what you are doing to it, eg translating it up 2, or stretching it etc. There are equations for this but I've forgotten them!
(x) is the basic equation of the graph, say, x² + 4x +4.
The F is what you are doing to it, eg translating it up 2, or stretching it etc. There are equations for this but I've forgotten them!
The letter within the brackets is the variable. You can have multiple variables too, like f(x,y), H(x,y,t) or anything you like really (but not repeated letters!).
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PIPSarah
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#9
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#9
f(x) is the gradient function isnt it? you use it to find gradients using differentiation?
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Ads.
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#10
(Original post by PIPSarah)
f(x) is the gradient function isnt it? you use it to find gradients using differentiation?
f(x) is the gradient function isnt it? you use it to find gradients using differentiation?
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button16
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#11
remember the little function boxes you did when you were like 10. x goes in, f(x) comes out. the function could be, say, adding 5, dividing by two... whatever.
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hawaiian_angel
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#12
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#12
(Original post by chanandler)
I need to know what f(x) means and why we use it in maths? I'm really stuck.
Thanks in advance
I need to know what f(x) means and why we use it in maths? I'm really stuck.
Thanks in advance
f(x) just means a 'function' of 'x',
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shaneal
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#13
조남호
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#14
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#14
I'm Korean high school student.and i have more questions after reading all the replys...f(x) means function basically as we all learned...but when we think about the polynomial,the question says 'the polynomial f(x)=3x 4....'I want to ask that f(x)'s meaning...
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Galibmehedijami
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#15
LowIQ
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#16
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Lighting girl
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Lighting girl
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Lighting girl
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Harry14
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#20
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