hardest on the site

this is one of the hardest quiz available on this site.play if you really have pretty decent knowledge about maths!!
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RATING3
TIMES RATED1
POPULARITY4.82
CREATED BYilovemathash
DIFFICULTYKILLER


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1
∫x / 1+cosx is...
  • Xsin(x)+sin^2x-cosx+c
  • (x / 1+cosx)*sinx+c
  • -xcotx+log|sinx|+xcosecx-log|tan(x / 2)|+c
  • (x / 1+cosx)*sinx
  • X / secx-log|x+(x^2-1)^1 / 2|+c
  • 2
    If ∫[(4e^x+6e^-x) / (9e^x-4e^-x)]=Ax+Blog(9e^2x-4)+C then find values of A, B, and C?
  • A=-1 / 2, B=3 / 4, C=c
  • A=-3 / 2, B=35 / 36, C=c
  • A=35 / 36, B=c, C=-3 / 2
  • A=-43e^x / e^x, B=21 / 46, C=c
  • A=12, B=23, C=c
  • 3
    If X=cosA'+i*sinA' and Y=cosB'+i*sinB'. Then what will be the value of [X-Y] / [X+Y]? Where ' I ' is an imaginary number?
  • i*cot[(A'-B') / 2]
  • Tan[(A'+B') / 2]
  • i*tan[(A'+B') / 2]
  • i*tan[(A'-B') / 2]
  • none of above!
  • 4
    If 4 coins are tossed together then what will be the probability of getting 2 heads and 2 tails of coins?
  • 4/5
  • 34/69
  • 3/8
  • 23/47
  • 1/9
  • 5
    In the series 1+[a+bx / 1! ]+[(a+b)^2 / 2! ]+............. ∞(infinite). The constant with X^n will be..
  • [e^a*b^n] / n!
  • [e^ab*b^n] / n^3!
  • [n^a+b^n] / 0!
  • [63! / 30! ]*n^a+b^a
  • None of above!
  • 6
    What is notification of superfactorial?
  • $
  • #
  • !
  • L
  • &
  • 7
    What is value of pi(π) to the 50 terms?
  • 3.1415926535 8,979,323,846 2,643,383,279 5,034,567,371 6,939,937,510
  • 3.1415926535 8,974,589,846 2,643,383,279 5,028,841,971 6,939,937,510
  • 3.141523667335 8,979,323,846 2,643,383,279 5,028,841,971 69,399,374
  • 3.1415926535 8,976,563,946 2,643,383,279 5,028,841,971 6,939,937,510
  • 3.1415926535 8,979,323,846 2,643,383,279 5,028,841,971 6,939,937,510
  • 8
    What is the value of 1,343 / 0! ?
  • 1,343
  • 0
  • 134.3
  • .1343
  • 13.43
  • 9
    if 1 2=5.196 2 3=11.180 3 4=18.520 4 5=27.000 then 5 6=??.???.
  • 36.4828
  • 33.4522
  • 30.0000
  • 45.6345
  • 12.1345
  • 10
    if ‎5 3 2=151025 9 2 4=183681 8 6 3=482464 then..... 7 2 5= ??????
  • 156767
  • 134562
  • 143549
  • 143525
  • 167389
  • Unanswered questions will be marked as wrong