Vhich of the following is correct? A) dx = lim | 1 %3D xp- = lim 4 V.r+4 V.r+4 V.r+4 -2 V.x+4 B) S dx = lim [ Vr+4 %3D dx O V.r+4 lim b-4 V.r+4 %3D a-1 a x+4

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