Step 1: Write out the definition of the function f:
The function f is given by:

Step 2: Calculate the value of the function f at t=-5:

Step 3: Calculate the value of the function f at t=-2:

Step 4: Calculate the value of the function f at t=2:

Step 5: Calculate the value of the function f at t=5:

Step 6: Calculate the value of the function f at t=6:

Hence