To obtain the composite function fg (x) from known functions f (x) and g (x). Use the hatch symbol # as the variable when inputting. Get the free "Composite Function Calculator" widget for your …

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2017年4月24日 · In order to find what value (x) makes f(x) undefined, we must set the denominator equal to 0, and then solve for x. f(x)=3/(x-2); we set the denominator,which is x-2, …

Step 1: Find the domain of g(x) and denote it by A. Step 2: Find the domain of the resultant function f(g(x)) and denote it by B. Step 3: Find their intersection (A ∩ B) which gives the …

如设f (x)=3x，g (x)=x+3，g (f (x))就是一个复合函数，并且g (f (x))=3x+3 链式法则用文字描述，就是“由两个函数凑起来的复合函数，其导数等于里边.

Evaluate f (2x2 +x+5) f (2 x 2 + x + 5) by substituting in the value of g g into f f. Simplify each term. Tap for more steps... Subtract 5 5 from 1 1. Free math problem solver answers your algebra, …

2014年12月17日 · I've attempted to solve the problem below, and here is what I got for a solution: Given $f (x)=x^2-9$ and $g (x)=x^2+3x-1$, find $ (fg) (x).$ $$ \begin {align} (fg) (x)&= (x^2-9) …

Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.

We are given: $\eqalign { & f (x) = x - 1 \cr & g (x) = {x^2} \cr} $ Given these functions the answer I get is: $fg (x)=x^2-1$ As the range of $g (x)=x^2$ is always positive this mea...

Enter a problem... The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.