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Search results

  1. M

    Mathematics: Post your doubts here!

    I hope i answered all of the queries...!! if not, sorry..i have my paper tomorrow..though m helping u...!! time to go for me now...bye bye guys..!!
  2. M

    Mathematics: Post your doubts here!

  3. M

    Mathematics: Post your doubts here!

    here's the missin part
  4. M

    Mathematics: Post your doubts here!

  5. M

    Mathematics: Post your doubts here!

  6. M

    Mathematics: Post your doubts here!

    A bit messy...but just used the product rule to differentiate.....and..equate to zero..and got the value
  7. M

    Mathematics: Post your doubts here!

    m lazy one..so wrote it in degree...u have to write it in radian from the very first...!! i think u know it....anyways..!! i hope it helped..!!
  8. M

    Mathematics: Post your doubts here!

  9. M

    Mathematics: Post your doubts here!

    I hope this will help...!! but a bit messy...sorry for that..!!
  10. M

    Mathematics: Post your doubts here!

    the first inequality is the inequality for the " perpendicular bisector of line joining (0,0) and (2,0)......whereas the 2nd inequality is for the " straight line starting from u making angle of pi/4 with the horizontal....!! now shade the common part..!!
  11. M

    Mathematics: Post your doubts here!

    u make sure u put dN and dt on the numerator..this is the 1st key...!! so.. dN/{N(1800-N)} =1/3600 * dt now.....use partial fractions..suppose this way......1/{N(1800-N)}=A/N + B/(1800-N) and find A and B...i hope u can solve this one....otherwise look at the book....find A and B..put in that...
  12. M

    A level Biology: Post your doubts here!

    Till now, i didnot carefully look the book...i think i read the chemicals move by diffusion...but i carefully looked at the book..and it says..it moves by active transport...and..now, the ms says..moves by diffusion...diffuses..and moves by diffusion is other thing..now i wonder what moves by...
  13. M

    Mathematics: Post your doubts here!

    U can find the formula in the book...look at it..!!! only the formula matters here..!!
  14. M

    Mathematics: Post your doubts here!

    dude u want the answer..not us...so if u want others to answer ur question...plz put the link....!!
  15. M

    Mathematics: Post your doubts here!

    u didnot mention marks...so i dont know the method may be longer...if u have mentioned marks too, i would have thought accordingly for any questions with less mark...well..here are the answers... i) Slope of AD=slope of BC, u can find it..and find a equation of line BC and then, CD and BC are...
  16. M

    Mathematics: Post your doubts here!

    State precisely which one u didnot understand...!! question number 9 all??? or i or ii or..sth like this..plz mention it...!! for any question in writing form, wait few more hours, i will do it...
  17. M

    Mathematics: Post your doubts here!

    Since question says f(-2)=0, so...x+2 is one of the factor...now divide f(x) by X+2 to get the result which will be a quadratic...now i think u can factorise quadratic...now if u get (4x+3) as another factor, then x=-3/4 ..isn't it...!! i think u can do it now...!!
  18. M

    Mathematics: Post your doubts here!

    O...i didnot see 9 ii)...for 9 ii) a) use...8Cos^4A-3=1.......and get it from here.. b)Use Cos^4A= 4Cos2A+Cos4A+3/8 and integrate...!!
  19. M

    Mathematics: Post your doubts here!

    For 4 i hope u can do i) .....and for ii) Look at the values...27^y can be written as 3^3y..also as (3^y)^3...so..if u substitute 3^y as x..it would b the above equation.....so from above equation, we see..factors are -2 -3/4 and 2/3...negatives values are not possible..so 3^y=2/3 giving y= -0.369
  20. M

    Mathematics: Post your doubts here!

    for 8 i) do a realisation..meaning..multiply u by 6-3i/1-2i and get a form...!! and find modulus and argument ii) that equation is a straight line starting from u and making an angle of 45 with a horizontal.....and...z is any pt on that line....so.....find the distance from (0,0) to a pt in...
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