f(x) = -x2 is a function.
The equation is solved with just f(x) on one side, and if you were to graph it, it would pass the vertical line test.
If it were written in a book of some sort, fx or f(x) is read aloud as "f or x". "f" is a function of some variable, "x". By function it means something happens to x e.g. x2 or 3x+4.
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Are you trying to solve for x? Fx = x2 - 3 x2 - Fx - 3 = 0 x2 - Fx = 3 x2 - Fx + (F/2)2 = 3 + (F/2)2 (x - F/2)2 = 3 + (F/2)2 x - F/2 = ±[ 3 + (F/2)2 ]1/2 x = F/2 ± [ 3 + (F/2)2 ]1/2
It actually is f(x) = y. F is a function, based on x, that gives you a result for y. An example might be f(x) = x2. This means that for every value of x, y has a value of x2.
f(x)=cos(sin(x2)) [u(v)]' = u'(v) * v' so f'(x) = cos'(sinx(x2)) * sin'(x2) * (x2)' f'(x) = -sin(sin(x2)) * cos(x2) * 2x = -2x sin(sin(x2)) cos(x2)
A cubic.
If it were written in a book of some sort, fx or f(x) is read aloud as "f or x". "f" is a function of some variable, "x". By function it means something happens to x e.g. x2 or 3x+4.
It is a many to one function (APEX)
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x2 is often used as shorthand for twice. So "right ankle fx x2" means the patient broke her ankle twice.
Are you trying to solve for x? Fx = x2 - 3 x2 - Fx - 3 = 0 x2 - Fx = 3 x2 - Fx + (F/2)2 = 3 + (F/2)2 (x - F/2)2 = 3 + (F/2)2 x - F/2 = ±[ 3 + (F/2)2 ]1/2 x = F/2 ± [ 3 + (F/2)2 ]1/2
plug -8 in for x
[fx] is a function of x, it usually used in graphs.
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It actually is f(x) = y. F is a function, based on x, that gives you a result for y. An example might be f(x) = x2. This means that for every value of x, y has a value of x2.
(x - 7)(x - 1) or (x + 7)(x + 1) depending on sign of 8x so zero is +/- 7 and +/- 1