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" 4."1.2^(2)+2.3^(2)+3.4^(2)+...

" 4."1.2^(2)+2.3^(2)+3.4^(2)+

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2. | [1 ,1 ,1 ],[4 ,3 ,2], [4^(2) ,3^(2), 2^(2)] | is equal to

If 1^(2)+(2^(2))/(2!)+(3^(2))/(3!)+(4^(2))/(4!)+....=ae,(1^(2).2)/(1!)+(2^(2).3)/(2!)+(3^(2).4)/(3!)+...=be,(1)/(2!)+(1+2)/(3!)+(1+2+3)/(4!)+...=ce then the descending order of a,b,c is

Evaluate (1) 2^(-3) (2)(-4)^(-2) (3)1/3^(-2) (4)(1/2)^(-5)

The sum of the series ((1)^(2).2)/(1!)+(2^(2).3)/(2!)+(3^(2).4)/(3!)+(4^(2).5)/(4!) +..is

The sum of the series ((1)^(2).2)/(1!)+(2^(2).3)/(2!)+(3^(2).4)/(3!)+(4^(2).5)/(4!) +..is

S_(n)=(1.2)/(3)+(2.3)/(3^(2))+(3.4)/(3^(3))......oo, then 4S is

(1.2)/(1!)+(2.3)/(2!)+(3.4)/(3!)+....=

The value of 1- 1/2(3/4) + 1/3(3/4)^(2) -1/4(3/4)^(3) + ... is: