# Recently Active Mathematics Questions

• 1) Prove that âˆ«x3 2ax-x2 dx=7Ï€a5/8. 2) Integrate: [ x4/(1-x4)] *cos-1(2x/(1+x2). Upper limit=1/ 3 ;Lower limit=-1/ 3 . 3) Integrate::: 2-x2/[(1+x) 1-x2 ].Upper limit=1;Lower limit=0. 4) Integrate:::: log(1+tanx) from 0 to ...
replied2014-08-05 05:49:44
• Let f(x) be a non constant twice differentiable function defined on (-âˆž,âˆž) such that f(x)=f(1-x) and f'(1/4)=0.Then a) f''(x) vanishes at least twice on [0,1] b) f'(1/2)=0 c) âˆ«(frm -1/2 to 1/2)f(x+1/2)sinxdx=0 d) âˆ«(fr ...
replied2014-08-05 05:48:15
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replied2014-08-05 05:07:01
• evaluate *Image* answer given is Ï€2. ...
replied2014-08-04 08:36:02
• The average cost (Rs. y) of a monthly output of x tons of a irm producing a valuable metal is Rs.((x2/10)-3x+62.5).sHOW THAT THE AVERAGE VARIABLE COST CURVE IS A PARABOLA.fIND THE OUTPUT And The cost at the vertex of the para ...
• 2.the girder of a railway bridge is a parabola with its vertex at the highest point 15m above the ends.if the span is 120 m find the height of the bridge at 24m from the middle point. ...
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• Integrate:: 4x3[d2/dx2(1-x2)5]dx from 0 to 1.Here d2/dx2 means the double derivative of the function w.r.t.x. This sum is meant for students only ,not for experts. ...
replied2014-08-04 01:44:56
• {} is fractional func [] is GIF | |is mod *Image* 5. âˆ«(0 to x)ex-[x]d{x} 6. âˆ«(0 to 4){ x }dx 7.âˆ«(-5 to 5)min({x+1},{x-1})dx ...
• consider the integrals *Image* let I be the greatest among them. prove that I=I4 ...
• Integrate: 1) (1+x-2/3)/(1+x) 2) cos2x /sinx 3)(x2 + n(n-1))/(xsinx+ncosx)2 ...
replied2014-08-03 04:24:43
• 1) Let f:R to R be continuous function which satisfies f(x)=âˆ«(0 to x)f(t)dt, then the value of f(ln5) is: a)0; b)2; c)4; d) 6. 2) Let I=âˆ«(0 to 1) (sinx)/ x and J=âˆ«(0 to 1) (cosx)/ x .Then which is true? a)I<2/3 and J ...
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• If x>0 then integrate (2x-[2x])2 from 0 to 100[x] where [.] means G.I.F. ...
replied2014-08-01 10:48:56
• 25)For equation mx + 3 = 7 - x, if x = 4 is the solution, then m = 1 -1 0 4 Your Answer c Correct Answer b Your Score -1 WHY? ...
0·1· #Mathematics
replied2014-08-01 10:23:58
• *Image* Post your solutions ...
replied2014-08-01 07:32:31
• Find the square root of ((0.75)^3/1-(0.75)) + (0.75 + (0.75)^2 + 1). My problem is that I am getting an answer 2.5 which is NOT one of the options provided. ...
replied2014-08-01 00:48:38
• âˆ« dx/cosx + cosec x âˆ« 3cot3x - cotx/tanx - 3tan3x âˆ«tan{x -k}tan{x+k}tan2x ...
replied2014-07-31 21:46:52
• Find all values of x which satisfies this equation, sin5x+cos3x=1 ...
replied2014-07-31 10:47:22
• try this integration: \frac{x^{2}-2}{x^{3}\sqrt{x^{2}-1}} ...
replied2014-07-30 10:07:41
• \sqrt{x+\sqrt{x+\sqrt{x+}..}}=y \sqrt{y+\sqrt{y+\sqrt{y+}..}}=5 find âˆš(x+y) ...
replied2014-07-30 09:13:39
• Let f:R->R be continuous function which satisfies f(x)=0âˆ«x f(t)dt, then the value of f(ln5) is: (a) 0 (b) 2 (c) 4 (d) 6 ...
replied2014-07-30 01:47:23
• Let f(x ) = x3 + 3x + 2 and g (x ) is the inverse of it. Find the area bounded by g (x ), the x-axis and the ordinate at x = â€“ 2 and x = 6. ...
replied2014-07-30 01:46:31
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replied2014-07-30 01:46:02
• âˆ«âˆš(sin x-sin3x/1-sin 3x)dx ...
replied2014-07-28 11:38:25
• 2^sinx+2^cosx>1 ...
replied2014-07-28 11:26:34
• âˆš(tanx+2)dx ...
replied2014-07-28 11:22:43
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replied2014-07-27 20:53:19
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replied2014-07-27 20:27:58