1. For the following line elements and vector V", write down the metric, the inverse metric, and V² = 9μVHVV: dr² a) ds² = -(1 + r²) dt² + b) ds² = -drdy, V" = (V², V³) = (a, b) 1+r² +r²d0², VP = (V¹, Vr, Vº) = (a, b, c)
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