MBA Exam

if x varies as y then x^2+y^2 varies as

1) x+y
2) x-y
3) x^2-y^2
4) x^3-y^3
5) None of these

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MBA Other Question

For all real x, f(x) satisfies 2f(x) + f(1-x) = 2*x2 + 1. Then which among the following is true for all x?

1) f(x) <= 1
2) f(x) >= -1
3) f(x) >= 1
4) f(x) <= -1
Which of the following sequence/s form(s) an arithmetic progression?I) log b, ....II) log b, log ,III) log a, log....IV) log a, log (a + b) , log (a + 2b), log (a + 3b) ....

1) Only IV
2) II, III and IV
3) II and III
4) None of these