Maths Maths Puzzle Numerical Ability

Integrate 3x + 5 / (x3-x2-x+1)
(a) 1/2 log | (x+1)/(x-1) | - 4/(x-1)
(b) log |2+tanx|
(c) -(1+logx)/x
(d) 2 log|(tanx)/(tanx+2)

Read Solution (Total 2)

ans is (A) solving by partial fraction
denominator can be written as (x+1)(x-1)^2
10 years agoHelpfull: Yes(0) No(0)

integration (3x+5)/(x3-x2-x+1)
so apply partial fraction so a=2 b=5 c=2
so ans is option a
10 years agoHelpfull: Yes(0) No(0)

Maths Other Question

If cos2A + cos2B + cos2C = 1 then ABC is a
(a) Right angle triangle
(b) Equilateral triangle
(c) All the angles are acute
(d) None of these
Find the remainder when 1^2+11^2+111^2+1111^2+...+(2001 times 1)^2
is divided by 100.