X =10y −2x =0 f y =10x−2y =0 f xx = −2 f yy = −2 f xy =1 f yx =1 The two partials, f xx,andf yy are the direct effects of of a small change in x and y on the respective slopes in in the x and y direction The partials, f xy and f yx are the indirect effects, or the cross effects of one variable on the slope in the other variable\ T ^ _ ` W T c Z l _ S ^S m nS X \ T U j S T d Y S a o i T a R Z p g q W U U d rU d sY X X rS W U T V S Y d S Z t u v u w xy z u { } { u v ~ } u u ~ yBorn in Delhi to Hindu Malayali parents C S Menon and Kunnath Kanakavalli, Krishnakumar Kunnath was brought up in New Delhi KK sang 3,500 jingles before breaking into Bollywood He is an alumnus of Delhi's Mount St Mary's School and graduated from Kirori Mal College, Delhi University He sang in the Josh of India song for the support of Indian Cricket Team during Chain Translocation In A Biological Context Injecting Viral J w e l l s