Express 1/(x(1-3x)) in partial fractions.
1/(x(1-3x))= A/x+ B/(1-3x) 1= A(1-3x) + B(1-3x)
when x=0 1=A
when x= 1/3 1=B/3 so B=3
1/(x(1-3x))= 1/x + 3/(1-3x)
LB
Related Maths A Level answers
All answers ▸Find the turning points of the curve y = 3x^4 - 8x^3 -3
Given that dy/dx=6-8x+x^4 and that x=1 when y=4. Find an expression for y in terms of x.
Statistics: Dave throws a ball at a bucket. The probability the ball goes into the bucket is 0.4. Dave throws the ball four times. What is the probability that he gets it in twice?
differentiate y = (4-x)^2