Define a recursive function mergeBy that merges two sorted lists by the given criterion, for example, in an ascending order or in a descending order (so that the resulting list is also sorted). The type signature of mergeBy is as follows. mergeBy :: (a -> a -> Bool) -> [a] -> [a] -> [a]

3. when you right-click a linked spreadsheet object, what commands do you choose to activate the excel features? a. linked worksheet object > edit b. edit data > edit data c. linked spreadsheet > edit d. object > edit data

3. what do the terms multipotentialite, polymath, or scanner mean?

Create a function called quadform( ) that takes as input the coefficients of the quadratic equation (a,b,c) and returns the two distinct real roots (x1,x2) as output, if they exist. in addition, the function returns a message (flag) that informs the user if an error occurred when trying to find two distinct real roots. the possible errors are: (1) "only one root is found"; (2) "imaginary roots are found"; (3) "any value of x is a solution"; (4) "no zeroes exist." if no errors occur, then flag should be "no errors".