Find the Karnaugh map, a TVL and a disjunctive form for the following functions!

1 The function f(x, y, z) has the value 1 either for x = 1 or if y = z and the value of x is less than the value of z, otherwise the value of the function is equal to 0.

2 f(x1, x2, x3, x4) = 0 for such vectors satisfying x1 + x2 > x3 + 2x4.

Hint: understand 0 and 1 as integers and + as the addition for integers.