If A ∈ R^n×n is invertible, then columns of A^−1 are linearly independent. Explain why.

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Q: 3. Evaluate 62² dV where G is bounded by a + 2y + 4z = 8 in the first octant.

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Q: 3. Evaluate 62² dV where G is bounded by x +2y + 4z = 8 in the first octant.

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Q: e G is bounded by x + 2y + 4z =

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Q: Solve the initial value problem ut +2ux = −tu(x,t), t>0, x ¤ R u(2,0) =sinx.

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