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3 years ago

If f(x)=3/x+2- sqrt x-3 f(7)=?

Mathematics

2 answers:

Dovator [93]3 years ago

7 0

To get the answer, you need to solve the equation for x = 7.

f(7) = 3/7 + 2 - sqrt(7) - 3.

= 3/7 - 1 - sqrt(7).

If you need to simplify it further:

= -4/7 - sqrt(7).

If you need it in decimal form: = -3.2171798824

vesna_86 [32]3 years ago

4 0

Answer:

f(7)=-3.217

Step-by-step explanation:

We are given that $f(x)=\frac{3}{x}-\sqrtx-3$

We have to find the value of f(7).

Substitute the value of x=7

Then, we get

$f(7)=\frac{3}{7}+2-\sqrt7-3=\frac{3}{7}-1-\sqrt7$

$f(7)=\frac{3-7}{7}-\sqrt7=-\frac{4}{3}-\sqrt7$

$f(7)=-\frac{4}{7}-2.646$

Because $\sqrt7=2.646$

$f(7)=-\frac{4+18.522}{7}=-\frac{22.522}{7}$

$f(7)=-3.217$

Hence, f(7)=-3.217

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