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hello, everyboy, LOOKING FOR LISP SOME ONE CAN HELP PLEASE. I got to do a lot of work on my new project, this is something I had never done before...the task is to calculate certain grade levels based on given levels. so, to move quickly and avoid routine calculations I would be grateful if some one can make lisp for me.... list should ask user a level-1 & level-2 input and then ask for point of distance for d1, d2, d3. I tried to attach a files, but office security system doesn't allowed me to attach. so, LEVEL-1 = 5.00 LEVEL-2 = 3.75 LEVEL-3 = x (THIS POINT FALL INLINE TO L1 & L2 ABOVE MID POINT, FOR ASSUMPTION ONLY) LEVEL-4 = ? (NEED TO FOUND THIS LEVEL) DIST-1 = 10 (THIS IS DIST BETWEEN LEVEL-1 & LEVEL-2) DIST-2 = 3.6 (THIS IS DIST BEWEEN LEVEL-3 & HIGHEST LEVEL i.e., LEVEL-1) DIST-3 = 8.7 (THIS IS PERPENDICULAR DIST BETWEEN LEVEL-3 & LEVEL-4 FOLLOWING 2% SLOPE [WHICH WE NEED TO FOUND).... FORMAULA WORKS LIKE THIS. L1-L2/D1 = X L1-(X * D2) = L3 L3-(0.02 * D3) = L4 (i.e., 4.376) please its very urgent and importan.........thanking in advance.