Sequences and Series NCERT Example 23 Class 11 Maths

Sequences and Series Class 11 Maths Example 23: If a, b, c, d and p are different real numbers such that {\displaystyle (a^2+b^2+c^2)p^2-2(ab+bc+cd)p+(b^2+c^2+d^2) \le 0 } , then show that a, b, c and d are in G.P.