<prompt> Sehemu ya grafu ya fxax2bxc imeonyeshwa hapa chini. Umbali kati ya mistari ya gridi kwenye grafu ni 1 unit.Je, thamani ya ab2c ni nini?asyukubwa 150;ticklen halisi3;nafasi halisi ya tiki2;urefu halisi 0.1cm;saizi halisi ya mshale0.14cm;mhimili wa kalamunyeusi1.3bp;vectorarrowsize halisi0.2cm;tickdown halisi-0.5;tickdownlength halisi-0.15inch;halisi tickdownbase0.3;tickdown halisitickdown;utupu rr_cartesian_axesxleft halisi, xright halisi, ybottom halisi, ytop halisi, xstep1, ystep1, bool useticksfalse, bool complexplanefalse, bool usegridtrue kuagiza grafu;mimi halisi;ikiwacomplexplane lebotextnormalRe,xright,0,SE;lebotextnormalIm,0,ytop,NW; nyengine lebox,xright0.4,-0.5;leboy,-0.5,ytop0.2;ylimitsybottom,ytop;xlimits xleft, xright;halisi TicksArrx,TicksArry;kwaixleftxstep; i0.1 TicksArrx.pushi;kwaiybottomystep; i0.1 TicksArry.sukumai;ikiwa tumia gridi xaxisBottomTopextendfalse, Ticks, TicksArrx ,pTickgray0.22,extendtrue,pisiyoonekana;,juukweli;yaxisLeftRightextendfalse,Ticks, TicksArry ,pTickgray0.22,extendtrue, pinvisible;,mishale;ikiwa vijiti vya matumizi xequals0, yminybottom, ymaxytop, paxispen, Ticks,TicksArry , pTickblack0.8bp,Sizeticklength, juukweli, Mishalesizeaxisarrowsize;yequals0, xminxleft, xmaxxright, paxispen, Ticks,TicksArrx , pTickblack0.8bp,Sizeticklength, juukweli, Mishalesizeaxisarrowsize; nyengine xequals0, yminybottom, ymaxytop, pmhimili, juukweli, Mishaleukubwaaxisarrowsize;yequals0, xminxleft, xmaxxright, paxispen, juukweli, Mishalesizeaxisarrowsize;;rr_cartesian_axes-4,3,-2,9;halisi fx halisi kurudi 8-x12;choragraphf,-3.9,2.16,operator .., nyekundu;asy  <response>: Kumbuka kuwa anzaalignf0 a02b0c cmwishoalignna anzaalignf1 a12b1c abc.mwishoalignKwa hivyo, anzaalignab2c c abc f0f1.endalignMchoro wa yfx hupita 0,7 na 1,4, hivyo f07 na f1 4. Kwa hiyo, ab2c 7 4 11. 