find the value of ∫∫∫x²y²z²(x²+y²+z²)dxdydz thtough the region bounded by x+y+z ≤ 1;x≥0;y≥0;z≥0;
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need is something that is necessary for an organism to live a healthy life. Needs are distinguished from wants. ... In other words, a need is something required for a safe, stable and healthy life (e.g. air, water, food, land, shelter) while a want is a desire, wish or aspiration.
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