solve prove that mth terms that question plz
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am= a + (m-1)d
an= a+ ( n-1)d
ma + m(m-1)d= na + n(n-1)d
ma + m.m d - md= na+ n.n.d- nd
ma- na + m.md - .n.n.d= md-nd
a( m-n) +d( m.m -n.n)= d( m-n)
a( m-n) +d( m-n)(m+n) = d( m-n)
a + d( m+n) = d
a + dm + dn= d
a (m+n) term= a+ ( m+ n-1) d
= a + md + nd-d
AS a + dm + dn=d
SO d-d=0
an= a+ ( n-1)d
ma + m(m-1)d= na + n(n-1)d
ma + m.m d - md= na+ n.n.d- nd
ma- na + m.md - .n.n.d= md-nd
a( m-n) +d( m.m -n.n)= d( m-n)
a( m-n) +d( m-n)(m+n) = d( m-n)
a + d( m+n) = d
a + dm + dn= d
a (m+n) term= a+ ( m+ n-1) d
= a + md + nd-d
AS a + dm + dn=d
SO d-d=0
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