Given $f ( x ) = 3 x ^ { 2 }$ over the interval [-1, 2], find: (a) the signed area, (b) the absolute area, between the graph of f and the x-axis from x = -1 to x = 2.

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The Answer of Given $f ( x ) = 3 x ^ { 2 }$ over the interval [-1, 2], find: (a) the signed area, (b) the absolute area, between the graph of f and the x-axis from x = -1 to x = 2.

Given f(x)=3x2f ( x ) = 3 x ^ { 2 }f(x)=3x2

Given $f ( x ) = 3 x ^ { 2 }$