Quant Question Of The Day: 103
Algebra
Find the least value of x² + 4y² + 9z² , if x + y + z = 14.
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Quant Question Of The Day: 102
Quant Question Of The Day: 101
Find the least value of x² + 4y² + 9z² , if x + y + z = 14.
using Cauchy Schwarz Inequality ,
(x² + 4y² + 9z²)(1 + 1/4 + 1/9) ≥ (x + y + z)²
(x² + 4y² + 9z²) ≥ 144
Quant Question Of The Day: 102
Quant Question Of The Day: 101
144
144