(b) f(z)= (4 – 5e*)³ x² + 1 (c) f(r)= ez %3D (d) f(z) = e=²–5z+4 ez-5x+4 (e) f(x)=xe² – e² = re² – e² %3D

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A: If given two planes a1x+a2y+a3z=c , andb1x+b2y+b3z=d are parallel thena1b1=a2b2=a3b3