These are calculus problems. I have no understanding on how to work them out. 6 . 12 pts Find the location of any saddle points and any relative maximum orminimumvalues of 9 ( 20 , 3 ) = 520 2 – day + y16 2 + 10 . Give your answer ( s ) as ordered triples( 2 , 3 2 ) and state what they are ( e. g . : " there is a saddle point at ( – 9 0 19 ) and a relativeminimum at ( 5 5 0 ) " )7 . 15 pts Find the location of any saddle points and any relative maximum or minimumvalues of f ( 2 , 3 ) = day – 2 3 – 2 4 2 . Give your answer ( s ) as ordered triples ( 2 3 2 ) andstate what they are ( e . g . : " there is a saddle point at ( – 9 0 19 ) and a relative minimumat ( 5 , 5 0) " )8 . 12 pts Find the volume below the surface1 – 20y over the rectangular region0 < < < 2 , – 2 < 3