We say that the function f(z) is a 4-rectanglable function on the interval [a, b) if...

 

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We say that the function f(z) is a 4-rectanglable function on the interval [a, b) if there are values of the points es such that R(f;a,a,c3, ca) = f(x) dr. Select all the true sentences in the following list: (A) The function f(r) - secr is 4-rectanglable on 4 (B) The function f(r) is 4-rectanglable on 0, v3 3- (C) The function f(r) csc r is 4-rectanglable on (D) The function f(r)- Inr is 4-rectanglable on (1, 10 (E) The function f(r) = t-rectanglable on (-5.5] (F) The function f(r) = v9is 4-rectanglable on (0,9| We say that the function f(z) is a 4-rectanglable function on the interval [a, b) if there are values of the points es such that R(f;a,a,c3, ca) = f(x) dr. Select all the true sentences in the following list: (A) The function f(r) - secr is 4-rectanglable on 4 (B) The function f(r) is 4-rectanglable on 0, v3 3- (C) The function f(r) csc r is 4-rectanglable on (D) The function f(r)- Inr is 4-rectanglable on (1, 10 (E) The function f(r) = t-rectanglable on (-5.5] (F) The function f(r) = v9is 4-rectanglable on (0,9|