Using tabular integration, the integral ft"(-2x² + 4x) cos(2x) dx equals: 3Tt -1+ 3T 2 2 2 the above the above - 2 +2" 2 the above none of them

Q: th 6) Let t, be the k" triangular number. Prove that t, + 4 k + 10 is k k also triangular.

A: It is given that tk is a triangular number that means tk=k(k+1)2. To prove: tk+4k+10 is triangular. ...

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A: The d'Alembert formula is used to solve wave equation of infinte length

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Q: D 1 2 В L 지1 191 122 + y2) dxdydz 2 2 2

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