Saying f (x) = 0 can mean different things depending on context If the function being defined, then it means that f (x) = 0 for all x, in which case your reasoning is correct Sometimes, though, it means that for a particular x, f (x) takes the value of zero, in which case f ′ (x) also being zero is notableA function may be thought of as a rule which takes each member x of a set and assigns, or maps it to the same value y known at its image x → Function → y A letter such as f, g or h is often used to stand for a functionThe Function which squares a number and adds on a 3, can be written as f(x) = x 2 5The same notion may also be used to show how a function affects particular valuesGiven f (x) = 3x 2 – x 4, find the simplified form of the following expression, and evaluate at h = 0 This isn't really a functionsoperations question, but something like this often arises in the functionsoperations context
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F(x).g(x) 0 meaning
F(x).g(x) 0 meaning-The expression f(0) represents the yintercept on the graph of f(x) The yintercept of a graph is the point where the graph crosses the yaxis This occurs where x is equal to 0 Therefore, if we plug x = 0 into a function, denoted f(0), the result will be the yinterceptThe output f (x) is sometimes given an additional name y by y = f (x) The example that comes to mind is the square root function on your calculator The name of the function is \sqrt {\;\;} and we usually write the function as f (x) = \sqrt {x} On my calculator I input x for example by pressing 2 then 5 Then I invoke the function by pressing



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Differentiable Meaning A function is said to be differentiable if the derivative of the function exists at all points in its domain Particularly, if a function f (x) f ( x) is differentiable at x = a x = a, then f ′(a) f ′ ( a) exists in the domainThe Meaning of the First Derivative At the end of the last lecture, we knew how to differentiate any polynomial function Polynomial functions are the first functions we studied for which we did not talk about the shape of their graphs in detail To > 0, then f(x) is an increasing function at x = pFor example if F(x) = x 2x 2 = (x2)(x1) = 0 then the graph is all points (x,y) in the plane that satisfy F(x) = 0 This graph is two vertical lines at x = 1 and x = 2 Of course F(x,y) may not actually have y occurring in the equation it may be the second case in disguise The second case may not have any x it may be 0=0 (the entire
We set the denominator,which is x2, to 0 (x2=0, which is x=2) When we set the denominator of g (x) equal to 0, we get x=0 So x cannot be equal to 2 or 0 Please click on the image for a better understanding To find the function value for f (0) you substitute 0 for each occurrence of x in the function f (x) = − 4x for 0 becomes f (0) = − 4 × 0 f (0) = 0 Answer linkAsymptotes Definition of a horizontal asymptote The line y = y 0 is a "horizontal asymptote" of f(x) if and only if f(x) approaches y 0 as x approaches or Definition of a vertical asymptote The line x = x 0 is a "vertical asymptote" of f(x) if and only if f(x) approaches or as x approaches x 0 from the left or from the right
0) = 0 x→x 0 This is the same as saying that the function is continuous, because to prove that a function was continuous we'd show that lim f(x) = f(x 0) x→x 0 We prove lim f(x) − f(x 0) = 0 by multiplying and dividing it by the same x→x 0 number – this won't change its value lim f(x) − f(x 0) = lim f(x) − f(x 0) (x − x 0The known derivatives of the elementary functions x 2, x 4, sin(x), ln(x) and exp(x) = e x, as well as the constant 7, were also used Definition with hyperreals Relative to a hyperreal extension R ⊂ ⁎ R of the real numbers, the derivative of a real function y = f ( x ) at a real point x can be defined as the shadow of the quotient ∆ yShow more Tbh thats about as good as most people would be able to do and i didnt know that f' (x) was dy/dx 0




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Assuming that f is integrable on compact sets, if f (x)= ∫ 0x f (t)dt, then f ′(x) = f (x), and f (0) = 0 The (unique) solution is f (x) = f (0)ex, hence f (x)= 0 for all x)f(y) f(x) f0(x)(y x) Now to establish (ii) ,(iii) in general dimension, we recall that convexity is equivalent to convexity along all lines;\(\lim_{x\rightarrow a0}f(x)=\pm \infty\) or \(\lim_{x\rightarrow a0}f(x)=\pm \infty\) Otherwise, at least one of the onesided limit at point x=a must be equal to infinity For Oblique asymptote of the graph function y=f(x) for the straightline equation is y=kxb for the limit \(x\rightarrow \infty\) if and only if the following two limits



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Ie, f Rn!Ris convex if g( ) = f(x 0 v) is convex 8x 0 2dom(f) and 8v2Rn We just proved this happens i g00( 2) = vTrf(x 0 v)v 0; 1 Answer George C Use definition f '(a) = lim h→0 f (a h) −f (a) h to find f '(x) = 1 √1 2xBut let's use "f" We say "f of x equals x squared" what goes into the function is put inside parentheses after the name of the function So f(x) shows us the function is called "f", and "x" goes in And we usually see what a function does with the input f(x) = x 2 shows us that function "f" takes "x" and squares it




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How to tell where f(x) greater than 0 or f(x) less than 0 How to tell where f(x) greater than 0 or f(x) less than 0If f''(x) >0 on an interval, then f is concave upward on that interval d) If f''(x)A key observation is that a sentence like f(x) =0 f ( x) = 0 or f(x) >0 f ( x) > 0 is a sentence in one variable, x x To solve such a sentence, you are looking for value (s) of x x that make the sentence true The function f f is known, and determines the graph that you'll be investigating



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Get the free "Solve f(x)=0" widget for your website, blog, Wordpress, Blogger, or iGoogle Find more Mathematics widgets in WolframAlphaAnswer and Explanation 1 When presented with the information that f(x) = 2, f ( x) = 2, this means that there exists some function where some input x x produces an output f(x), f ( x), and thatF (x,y)=0 is a two variable function where x and y are variables whereas in the second and third cases they are single variable functions and here we are simply substituting the xy and x/y in the function f 585 views




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