What is the maximum value of a function f -LRB- x -RRB- = -LRB- sinx -RRB- -LRB- cosx -RRB- ?
If f -LRB- x -RRB- = -LSB- sinx + cosx -RSB- , then the number of points of discontinuity of the function for x belongs to -LRB- 0,2 pie -RRB- . How can I do this using the graphical method?Here brackets mean greatest integer function .