1. log|ex+2/ ex+1|+c
2. log|ex-2/ ex+1|+c
3. log|ex-2/ ex-1|+c
4. none
log|ex-2/ ex-1|+c
1. Tan-1(x3+1)+c
2. 1/3Tan-1(x3-1)+c
3. 1/3Tanh-1(x3+1)+c
4. 1/3Tan-1(x3+1)+c
1/3Tan-1(x3+1)+c
1. 2/√23 tan-1(4 sin x-3/√23)+c
2. 2/√23 tan-1(4 sin x+3/√23)+c
3. 2/√23 tan-1(4 sin x-3/√24)+c
4. none
2/√23 tan-1(4 sin x-3/√23)+c
1.
2.
3.
4. none
1. log|cosx / 1+cos x|+c
2. log|1+cosx / cos x|+c
3. log|1-cosx / cos x|+c
4. none
log|1+cosx / cos x|+c
1. 2a2
2. a2
3. -2a
4. 2a
-2a
1.
2.
3. 2/3log|1-x3|+c
4. 2/3log(1/√(1-x3))+c
1. 0
2. -1
3. 1
4. 1/a
-1
1. log|x(x-cos x)|+c
2. log |1-cosx/x|+c
3. log|x/x-cos x|+c
4. none
log |1-cosx/x|+c