Q. 353.8( 4 Votes )

Find the value(s) of a for which f(x) = – ax is an increasing function on R ?

Answer :

We have,

f(x) = – ax



Given that f(x) is on increasing function


for all x R


for all x R


a < for all x R


But the last value of 3x2 = 0 for x = 0


a 0


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