" (7) -5D qurfir wi èrer af the coment "

if for nonzero x , af(x) + bf(1/x) =1/x-5 , where a!=b then f(2) =

The incircle of Delta ABC touches the sides AB, BC and CA of the triangle at the points D, E and F. Prove that AD + BE +CF=AF+CE +BD=1/2 (The perimeter of DeltaABC )

If for x =0 af(x) +bf(1/x)=1/x-5 where a ne b then int_1^2xf(x) dx is equal to

(A) Metals of 4d and 5d series have greater enthalpies of atomization than the corres- ponding 3d series. (R) 4d and 5d series elements are smaller than 3d series

underset((I))(AF_(3))overset(+2F)rarrunderset((II))(AF_(5))overset(+2F)rarrunderset((III))(AF_(7)) For the above change which statement is correct?

Consider the reaction. A + B rarr C + D If the reaction is exothermic and spontaneous only in the direction opposite to the indicated one coment on the sign of Delta G and Delta S for the direction indicated in the equation.

The average age of three boys is 25 years and their af age in the proportion 3:5:7. The age of the youngest boy is 9backslash years b.15 years c.18backslash years d.21 years

In DeltaABC, BE is a median and is the mid-point of BE. Draw AO and extend it to meet BC at D. Draw CO and extend it to meet BA at F. If CD = 15, BD =5, AO =12 and AF = 9 or OF OD is equal to