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Mathematics: Post your doubts here!

Taiyaba

Taiyaba

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leadingguy said:
please refer the year from which u took this question or the complete question if took from a book .. I ust want sumthing more to understand what is the question about :)
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We are supposed to find the equation of the line
 
cramming

cramming

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hey sorry i forgot logs... can someone help?
what do i do after (2x-1)ln5=ln2+xln3
thanks in advance ;)
 
P

PhyZac

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nightrider1993 said:
the formula for volume is
Volume= (pi )*( Integration of y^2)
So basicly u just have to use this formula and find the answer
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Yes I know that......but i cant figure out how to do it, like what number to substitute x after finding the integration.....the question did not give a limit of x..
 
whitecorp

whitecorp

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PhyZac said:
Yes I know that......but i cant figure out how to do it, like what number to substitute x after finding the integration.....the question did not give a limit of x..
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If you drew out the curve, you will notice that the x-intercepts are x=0 and x=8; since we are looking at volume of revolution about the x-axis, those x-intercept values would give you your lower/upper limits of integration respectively.

Hope this helps. Peace.
 
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PhyZac

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whitecorp said:
If you drew out the curve, you will notice that the x-intercepts are x=0 and x=8; since we are looking at volume of revolution about the x-axis, those x-intercept values would give you your lower/upper limits of integration respectively.

Hope this helps. Peace.
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Thank you so much, Yes it helped me alot, i am now able to solve it....Jazak Allah khairan... !!!!!
 
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