# 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!!
TIMES PLAYED11
RATING3
TIMES RATED1
POPULARITY4.82
CREATED BYilovemathash
DIFFICULTYKILLER

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1
âˆ«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 âˆ«[(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! ]+............. âˆž(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
• \$
• #
• !
• L
• &
• 7
What is value of pi(Ï€) 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 â€Ž5 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