C = -1

y = -ln(x^2/2 +1)

c = 1/k +1

L = 1/(ktlnt-kt+1+k)

c = 4/sqrt(3) x (a)

y = 4a/sqrt(3) sinx -a

c = -41/12

c = 2

y = cuberoot(-sqrt(x^2+1) +2)

c = 1/2

y = sqrt(-2xcosx + 2sinx + 1)

c = 25

u = -sqrt(t^2 + tant +25)

C = 1

u = -t^2 + t^3

C = 1/4

y = xlnx/2 - x/4 + 1/4x

C = 3

y = 1/xlnx- 1/x + 3/x^2

C = 0

y = sint/t^3

C = 1

y = 1 + 1/(x^2 + 1)^3/2

c = -1

y = -xcosx-x

y = ln(x^2/2 - C)