chris215
  • chris215
To three decimal places, find the value of the first positive x-intercept for the function f(x) = 2cos(x + 3).
Mathematics
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chris215
  • chris215
To three decimal places, find the value of the first positive x-intercept for the function f(x) = 2cos(x + 3).
Mathematics
schrodinger
  • schrodinger
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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chris215
  • chris215
I got -1.429 but i think that's wrong
anonymous
  • anonymous
it has to be wrong, since it is not positive
anonymous
  • anonymous
\[2\cos(x+2)=0\\ \cos(x+2)=0\\ x+2=\frac{\pi}{2}\] i guess that gives you the negative answer right?

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anonymous
  • anonymous
try \[x+2=\frac{5\pi}{2}\]

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