Is this right? Please check and tell me the answer fast

Mathematics

2 answers:

Goryan [66]2 years ago

7 0

Yes it is correct, I've done the maths myself as wlel

shusha [124]2 years ago

7 0

Check your values again $\bf \begin{array}{ccccccc}
x&|&-2&-1&0&1&2
\\ \quad \\

f(x)&|&-(-2)^2+3&-(-1)^2+3&-(0)^2+3&-(1)^2+3&-(2)^2+3
\end{array}$

You might be interested in

COMPLETE<br> Find the value of the function for O.<br> sin(45°) = ?

geniusboy [140]

Answer: $\sqrt{2}/2$ which is Choice B

This is the same as writing $\frac{\sqrt{2}}{2}$

The second "2" is not under or inside the square root.

==========================================================

Explanation:

Refer to the unit circle below. I've highlighted the angle 45 degrees and its corresponding sine value. It's the y coordinate of the point on the unit circle, for this particular angle.

Therefore, $\sin(45^{\circ}) = \frac{\sqrt{2}}{2}$

--------------

You could alternatively draw out a 45-45-90 triangle. Let x be the leg length and the hypotenuse is 1 unit long. Solve $x^2+x^2 = 1$ for x and you should get $x = \frac{\sqrt{2}}{2}$ as the length of each leg.