Solution:
On differentiating w.r.t. y, we get
On putting y =0 in Eq. (i), we get
On again differentiating Eq. (i), we get
On putting Y= 0 in Eq. (iii), we get
On solving Eqs. (ii) and (iv), we get
m=35and n=45
For natural numbers m, n, if
On differentiating w.r.t. y, we get
On putting y =0 in Eq. (i), we get
On again differentiating Eq. (i), we get
On putting Y= 0 in Eq. (iii), we get
On solving Eqs. (ii) and (iv), we get
m=35and n=45