## chris215 one year ago To three decimal places, find the value of the first positive x-intercept for the function f(x) = 2cos(x + 3)

1. anonymous

$\frac{5\pi}{2}-2$ is what i was trying to suggest in the last post

2. anonymous

okk actually $\frac{5\pi}{2}-3$

3. chris215

1.712

4. chris215

but then i get -1.429 and thats the wrong answer

5. merchandize

$x=\pi \div2-3$

6. chris215

i got the same ansewer tho

7. merchandize

do you have answer for that?

8. chris215

-1.429..

9. chris215

im confused that answer isn't correct though bc i checked w my teacher and the answer is supposed to be postive thats all i knwo

10. merchandize

I need to check again..there can be a mistake