Question

find an equation of the tangent line to y=2sin(x) x=3pi/4

Answer 1

I know that 2sinx become 2cosx

Answer 2

so is that 2cos(3pi/4)? which becomes \[-\sqrt{4}\]?

Answer 3

\[2\cos(\frac{3\pi}{4})=2\times -\frac{\sqrt{2}}{2}=-\sqrt{2}\]

Answer 4

so does that become y-\[\sqrt{4}\]=\[-\sqrt{4}\](x-3\[\Pi\]/4

Answer 5

y-sqrt4=sqrt4(x-3pi/4)

Answer 6

right?

Answer 7

satellite was correct with the value being negative sqrt(2)

Answer 8

wait what?

Answer 9

oh got it.