Define   global variable d and set it's  value d=3. Show Sinh[(t/d)] and Cosh[d*t] for t ∈( -1, 1). First should be thick and dashed and the second brown. Axes must be labeled.
(3b)
Using Manipulte show previous graph for d∈<1,100> with step 3.
(3b)

Using Solve find solution of polynomial equation (7+d)(x^3)+d*(x^2)+9x=17,  d is a parametr. 
(2b)
The first root involce into   7(x^3)+c*(x^2)+9x, where c =3.
Using Print print the result as a decimal number.
(2b)
Using Plot show abs(x1)+2*abs(x2)+3abs(x1) for  d ∈( -1, 1), axes must be labeled.
(3b)

Using FindSequenceFunction find 156th term of {1, -2, 4, -8}
(2b)
Using Print show it in form "4.56*
(10^23)"
(2b)

Define a matrix of rank n, (Subscript[a, i,j])=(i+j)th prime number.
(3b)
Create the list of couples {n,((det(matrix))/(n!))}, n=1,2,3,...40
(3b)
Using ListPlot show the list with labeled axes, poits shoud black.
(2b)