[" 19.If "A=[[ab,b^(2)],[-a^(2),-ab]]" and "A^(n)=0," then the "],[" minimum value of "^(*)n'" is "],[[" 1) "2," 2) "3," 3) "4," 4) "5]]

If ab=2a + 3b, a>0, b>0, then the minimum value of ab is

If ab=2a+3b, agt0, b gt0 , then the minimum value of ab is

If ab=2a+3b, agt0, b gt0 , then the minimum value of ab is

If ab=2a+3b, agt0, b gt0 , then the minimum value of ab is

If ab = 2a + 3b, a gt 0, b gt 0 , then the minimum value of ab is

If ab = 2a +3b, a gt0, b gt 0, then the minimum value of ab is-

If ab^2c^3,a^2b^3c^4,a^3b^4c^5 are in AP (a,b,cgt0) thgen the minimum value of a+b+c is

If A = {:[(4),(2),(3)] and B = [1 0 2], the find the value of AB.

Select and write the correct answer from the given alternatives in each of the following:If A=[[ab,b^2],[-a^2,-ab]] and A^n=0 ,then the minimum value of n is