the derivatives with respect to x of 2cos^2(x^2 + 2).
a. 4sin(x^2 + 2) cos (x^2 + 2)
b. -4sin (x^2 + 2)cos (x^2 + 2)
c. 8xsin(x^2 + 2) cos (x^2 + 2)
d. -8xsin(x^2 + 2) cos(x^2 + 2)

Question

the derivatives with respect to x of 2cos^2(x^2 + 2).
a. 4sin(x^2 + 2) cos (x^2 + 2)
b. -4sin (x^2 + 2)cos (x^2 + 2)
c. 8xsin(x^2  + 2) cos (x^2 + 2)
d. -8xsin(x^2 + 2) cos(x^2 + 2)

nenadmatematika · Answer

sorry had some connection problems :D I'll do it now :D

nenadmatematika · Answer

y'=2*2cos(x^2+2)*(-sin(x^2+2))*2x=-8xsin(x^2+2)cos(x^2+2) so the answer is d

anonymous · Answer

i disconnect to on OS

nenadmatematika · Answer

they  update the site from time to time, so we all lose connection...