L=,dd +(I)  1Courier New1Symbol New1Courier New1Courier NewTimes New RomanTimes New Roman1Courier New1Courier New1Courier New1Courier NewPQPTPQPTPQPTPQPT?/ <```@@@?~~~~~ԱޱޱԱ޿޿ph (((Pdd{  d< p {2{gQo?d%A?>c@HI"8e@00Q[3ڻù@???>K ףp=Gz)> ףp=@ű ̣@??? 789 :;<=@싿|ttbf(t,b)x = t; y = b; z = f(t,b)Lr@=\g@>͵42???$$$??pfffff?@ d0u@@033333@ |j@???p ?$@(A,B0C4DhOU(iabf(a,b)a+seg (a,b,f(a,b)) to (a,b+1,f(a,b)+fy(a,b))b+1f(a,b)+fy(a,b)@᷌@} 42???$$$??ףp= ?OO@WϊF?Gz@II@xV4@???p; 2???$$$@@倶l5z??z@оԤra@-N @???8E/4+y^2/9F h8  @^2/9YA!ITYLS@A!IT,ZLS@@sl@Lr@Times New RomanJOlive: tangent plane ,-1)>\SSS{)1rrq@ eϡ@Times New RomanXKAnimate a to change x; animate b to change yPpULzhlͺTimes New RomangThis file authored by John Ganci of Richland CC, Dallas TXo+@n P?v@`{@Times New Roman x = 2ucos(t); y = 3usin(t); z = u^2p<@((@dM]@1Courier NewL(x,y,z) = (a,b,f(a,b))2/9)p<:+P!@޸Eo3@1Courier NewMseg (a,0,0) to (a,b,0)p<D6@Nb H@1Courier New8Nseg (0,b,0) to (a,b,0)p<47KR@fi1'm@1Courier NewNseg (a,b,0) to (a,b,f(a,b))2/9)p<47KR@fiHHF@1Courier NewOx = a; y = t; z = f(a,t)^2/9?p<47KR@fi_rǰ@1Courier New`Px = t; y = b; z = f(t,b)^2/9 /p<Ql]>M@ĵ%:uފ@t@1Courier NewQseg (a,b,f(a,b)) to (a+1,b,f(a,b)+fx(a,b))p<Ql]>M@ĵ%:*!@1Courier NewQseg (a,b,f(a,b)) to (a,b+1,f(a,b)+fy(a,b)) p<Ql]>M@ĵ%:F@1Courier NewR seg (a,b,f(a,b)) to (a+fx(a,b),b+fy(a,b),f(a,b)-1)p<Ql]>M@ĵ%: tW@1Courier New@S plane{[fx(a,b),fy(a,b),-1];(a,b,a^2/4+b^2/9)}p<Գ84\@&@=ˑ #.?1Courier NewS z = f(x,y)^2/9p<?l[@6O?1Courier New