If the function f is continuous for all real numbers and if f(x)=x^2-4/x+2

Asked by maham237 @ 24/12/2020 in Mathematics viewed by 303 People

If the function f is continuous for all real numbers and f(x) = (x^2-4)/(x+2) when x cannot equal -2 , then f(-2) =?

Answered by maham237 @ 24/12/2020

The function is continuous for all real numbers:
f ( x ) = ( x² - 4 ) / ( x + 2 ) = $\frac{(x-2)(x+2)}{x + 2}$ =
= x - 2
f ( -2 ) = - 2 - 2 = - 4

The function f is defined by f(x)=x^2+3x-10

Asked by maham237 @ 25/12/2020 in Mathematics viewed by 337 persons

The function f is defined by f(x)=x^2+3x-10 If f(x+5)=x^2+kx+30, k= Find the smallest zero of f(x+5), x=

Approximate the real number solution(s) to the polynomial function f(x) = x3 + 4x2 + x − 6.

Asked by maham237 @ 02/12/2020 in Mathematics viewed by 362 persons

Approximate the real number solution(s) to the polynomial function f(x) = x3 + 2x2 − 5x − 6. a. x = −3, x = −1, x = 2 b. x …

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number? x = –1 and x =

Asked by maham237 @ 28/11/2020 in Mathematics viewed by 349 persons

Which graph models the function f(x) = −2(3)x?

Asked by maham237 @ 18/12/2020 in Mathematics viewed by 370 persons

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Asked by maham237 @ 15/12/2020 in Mathematics viewed by 632 persons

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Asked by maham237 @ 18/12/2020 in Mathematics viewed by 543 persons

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Asked by maham237 @ 01/12/2020 in Mathematics viewed by 678 persons

Which graph represents the function f(x) = (x – 5)2 + 3?

Asked by wiki @ 07/11/2020 in Mathematics viewed by 355 persons

Let f be a continuous function on the closed interval

Asked by admin @ 29/11/2021 in Mathematics viewed by 262 persons

Let f be a continuous function on the closed interval [ − 2 , 5 ]. If f((-2)=-7 and f(5)=1, then the Intermediate Value Theorem guarantees that

The real number x when added to its inverse

Asked by admin @ 20/08/2021 in Math viewed by 279 persons

The real number x when added to its inverse gives the minimum value of the sum at x equal to 2 1 -1 -2

Which function below is the inverse of f(x) = ?

Asked by maham237 @ 23/12/2020 in Mathematics viewed by 321 persons

Which function below is the inverse of f(x) = the quantity of two x plus three, over five.?f−1(x) = the quantity of five x plus three, over twof−1(x) = the …

Which statements accurately describe the function f(x) = 3? check all that apply.

Asked by wiki @ 16/11/2020 in Mathematics viewed by 423 persons

Which statements accurately describe the function f(x) = 3√18^x? Check all that apply. A. The domain is all real numbers. B. The range is y > 3. C. The initial value …