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3 years ago

Inverse functions f (x) = -3x +2 find f -1 (7)

Mathematics

1 answer:

jekas [21]3 years ago

7 0

$y = f(x) \\ \\ x = f^{-1} (y)$

Therefore, set y = 7
$y = -3x+2 = 7$

Solve for x

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4(0.5f−0.25)=6+f what is f<br><br><br> I am so lost when we were doing this in class

muminat

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Show that the equation x^3+6x-5=0 has a solution between x=0 and x=1

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Since the value of f(0) is negative and the value of f(1) is positive, then there is at least one value of x between 0 and 1 for which f(x) =0.

Step-by-step explanation:

The equation f(x) given is:

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For x = 0. the value of the expression is:

$f(0) = 0^3+0-5\\f(0) = -5$

For x = 1, the value of the expression is:

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Since the value of f(0) is negative and the value of f(1) is positive, then there is at least one value of x between 0 and 1 for which f(x) =0.

In other words, there is at least one solution for the equation between x=0 and x=1.

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