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**solars** If g(x) is continuous for all x, which of the following integrals necessarily hv the same value?

1.)integral sign (a to b) f(x)dx

2.)integral sign (a to b) abs(f(x))dx

3.)integral sign ((a-c) to (b-c)) f(x+c) dx

4.)integral sign (a to b) (f(x)+c)

answer choices are:

A 1, 2 only

B 1, 3 only

C 1, 2, 4 only

D 2,3,4 only

E no two necessariyt hv the same value

I think that 1 and 2 won't have the same value, but I am not completely sure. I have no idea when comparing 1 and 2 to 3 and 4.