Recent content by Tommzar

im still strugling on this i did forget to mention that it is a quadralateral plot of land

have you covered maxima & minima yet?

i have worked out angle BCD as being 59 degrees and worked out the area of triangle BCD as having an area of 6946m^2 just trying to find the side AD is puzzling me

Homework Statement i need to find angle BDC and side BC when given that AB = 60m BAC = 64 AC = 124 BD = 130 CD = 145 and to find the area of the whole plot Homework Equations The Attempt at a Solution i have worked out side BC = 111.59 by using the Co-sine rule a^2 =...

right i actually remembered how to do this alls i had to do was expand the left side to show it = the right side

The highlighted one is the equation i needed to verify

so therefore the whole right hand side would = ln(xy^3/2) where as the left = log(1/2xy^2) so where it says 3 ln y it should read 2 ln y i think i have got this now thanks for your help mark :)

i think there is a typo on the original criteria sheet as it reads 3 ln y when combined this = y^3 so I am thinking that it should be 2 ln y if so i think i have figured it out if not I am still stumped

this is what i got by combining the terms on the right ln(xy^3/2)

vaguely yes and yes well from the criteria sheet that is what it reads

it has been a while since i covered structural mechanics but I am sure i can remember that the maximum bending moment occurs at the middle point of the beam and the calc should include (Ra x 1/2l) - (UDL x 1/2b x 1/4l) < try that and let me know how you get on Ra = reaction L = length of beam

Homework Statement log(1/2xy^2) = ln x + 3 ln y - ln 2 Homework Equations The Attempt at a Solution i have been trying for hours on with next to no results even just an insight on how to go about it would be helpful