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Write the common difference of an A.P. w...

Write the common difference of an A.P. whose nth term is `x n+ydot`

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Nth term Tn​ of an AP is given by T_n​=x.n+y
also we know
`d=T_n​−T_(n−1)​`
`d=x.n+y−(x(n−1)+y)`
` =x.n+y−xn+x−y=x` ...
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