$($Without using AI with a $1-$d graph $)$ : Problem $1$: The line $\{x=z=0,$yin$[-\frac{L}{2},\frac{L}{2}]\}$ carries a nonuniform current given by

$I(y)=I_o(1-2\frac{|y^{\text{'}}|}{L}).$

Obtain B at point $(0,0,z)$ using Biot$-$Savart law.