Question

f(4,5),(5,6),(6,-4)
g(4,-4),(6,5),(8,5)
FIND f+g,f-g,fg

Answer 1

this is the answer this one i did directly without explanation

Answer 2

Finding f + g, f - g, fg:

Given,

f = {(4, 5), (5, 6), (6, -4)}

g = {(4, -4), (6, 5), (8, 5)}

Domain of f = {4, 5, 6}

Domain of g = {4, 6, 8}

Domain of f ∩ Domain of g = {4, 6}

f + g = {(4, 5-4), (6, -4+5)}

       = {(4, 1), (6, 1)}

f - g = {(4, 5-(-4)), (6, -4-5)}

      = {(4, 9), (6, -9)}

fg = {(4, 5(-4)), (6, -4(5)}

   = {(4, -20), (6, -20)}