1) 0<x<∏/2 ise
cotx =7/9 ise 2tanx - sinx + 3cosx = ?
2) 3x+3y-25=0
8x-y-38=0 denklem sisteminin çözüm kümesi ?
3)cos (1500) + sin (210)tan (25∏/6) . cot (-11∏/4)= ?
4) f ,g : |R -> |R , f(x) = x2+2 , g(x)= x-2
a) (fog) (x) = ?
b) (gofog) (3) = ?