Question

The graph of the function?

Answer 1

\[\LARGE cosx.\cos(x+2)-\cos^2(x+1)\]

Answer 2

write the first as 2 Cos C* cos D formula

Answer 3

A)Straight line passing through the point(0,-sin^2 1) with slope 2
B)Straight line passing through origin
C)Parabola with vertex(1,-sin^2 1)
D)Straight line passing through the point(pi/2,-sin^2 1) and parallel to x axis

Answer 4

2 Cos C* cos D?

Answer 5

cosx.cos(x+2) = (cos (x + x + 2) - cps(x - x - 2))/2

Answer 6

I think ... rest you can do .

Answer 7

can u write which identity u used?

Answer 8

sorry ... wrong formula. use the opposite.
\[ \cos (C + D) + \cos (C-D) = 2 \cos C \cos D\]

Answer 9

I see :O

Answer 10

ill try it..and let u know

Answer 11

other formula to be used \(\large \cos2y=2\cos^2y-1\)

Answer 12

cosx cos(x+2)
cos(x+1-1) cos(x+1+1)
{cos(x+1)cos1 + sin(x+1) sin1} { cos(x+1)cos1- sin(x+1) sin1}
{cos(x+1)cos1}^2 - { sin(x+1) sin1} ^2

Answer 13

looks like you did the other way.

Answer 14

the longer way, i think...