Fais constant vector then grad .a) = (a) b)a ()0 (d) af o a ob oc o d iff = xyi +2x yzj-3yz?k then the value of curlf at point (1, -1, 1) is (a)i+2k ) -i-2k ) n

fais constant vector then grad .a) = (a) b)a ()0 (d) af O a Ob Oc O d IfF = xyi +2x yzj-3yz?k then the value of curlF at point (1, -1, 1) is (a)i+2k ) -i-2k ) none of these O a O b O C O d