If the right hand derivative of `f(x)=[x] tanpix` at `x=7` is `kpi` then `k=`

The right hand derivative of f(x)= [x] tan (pi x) at a point x=7 is k pi then find the value of k. where [.] is the greatest integer function.

The right hand derivative of f(x) = [x] tanpix at x = 7 is (where [.] denotes the greatest integer function)

The right hand derivative of f(x)=[x]t a npix at x=7 is (where [.] denotes the greatest integer function) a. 0 b. 7pi c. -7pi d. none of these

The right hand derivative of f(x)=[x] tan pi xatx=7 is (where [.] denotes the greatest integer function) 0 b.7 pi c.-7 pi d. none of these

The right hand derivative of f(x)=[x]t a npix a tx=7 is (where [.] denotes the greatest integer function) 0 b. 7pi c. -7pi d. none of these

The right hand derivative of f(x)=[x]t a npix a tx=7 is (where [.] denotes the greatest integer function) 0 b. 7pi c. -7pi d. none of these

The left hand derivative of f(x)=[x]sin(pix) at x = k , k in Z , is

The left hand derivative of f(x)=[x]sin(pix) at x = k , k in Z , is

The left hand derivative of f(x)=[x]sin(pi x) at x=k,k is an integer,is

Find the left hand derivative of f (x) =[x] sin pi, x , at x=k where k is an integer.