A function f(x) will have a local maximum at x = c if
[ h is positive and tends to zero]
A function f(x) will have a local minimum at x = c if [ h is positive and tends to zero]
If plus sign (+) denotes the positive electrode and minus sign (-) denotes the negative electrode, then which of the following statement is correct for an iron spoon to be copper-plated ? (a) Iron spoon (+), copper plate (-), Iron sulphate electrolyte (b) Iron spoon (-), copper plate (+), Iron sulphate electrolyte (c) Copper plate (-), Iron spoon (+), Copper sulphate electrolyte (d) Copper plate (+), Iron spoon (-), Copper sulphate electrolyte