If [3x/(x-a)(x-b)]=[2/(x-a)]+[1/(x-b)] then a:b=

1.  1:2

2.  -2:1

3.  1:3

4.  3:1

4

-2:1

Explanation :
No Explanation available for this question

If [(3x+4)/(x+1)2(x-1)]=[A/(x-1)]+[B/(x+1)]+[C/(x+1)2] then A=

1.  7/4

2.  1/4

3.  10/3

4.  1

4

7/4

Explanation :
No Explanation available for this question

If [(x+1)2/x(x2+1)]=[A/x]+[(Bx+C)/(x2+1)], then cos-1(A/C)=

1.  π/6

2.  π/4

3.  π/3

4.  π/2

4

π/3

Explanation :
No Explanation available for this question

If [(x2+x+1)/(x2+2x+1)]=A+[B/(x+1)]+[C/(x+1)2] then A-B=

1.  4C

2.  4C+1

3.  3C

4.  2C

4

2C

Explanation :
No Explanation available for this question

The coefficient of x2 in the expansion of [(1+10x+x2)/ex] is

1.  -10

2.  –(17/2)

3.  –(15/2)

4.  -8

4

–(17/2)

Explanation :
No Explanation available for this question

x+(x2/3!)+(x3/5!)+……….∞=

1.  2√x(e√x- e-√x)

2.  (√x/2)(e√x- e-√x)

3.  (e√x- e-√x)/2

4.  0

4

(√x/2)(e√x- e-√x)

Explanation :
No Explanation available for this question

1+(22/2!)+(32/3!)+(42/4!)+……∞=

1.  2e

2.  e2

3.  e3

4.  e2/2

4

2e

Explanation :
No Explanation available for this question

Coefficient of x2 in e2x+3

1.  e2

2.  e3

3.  2e3

4.  3e2

4

2e3

Explanation :
No Explanation available for this question

(4/1.3)-(6/2.4)+(12/5.7)-(14/6.8)+…….=

1.  loge(2/e)

2.  loge(e/2)

3.  loge2

4.  0

4

loge2

Explanation :
No Explanation available for this question

1.  –(x3/3)

2.  x3/3

3.  x2/2

4.  –(x2/2)

4