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(D) f(t) is odd and g(t) is odd Aft) is even and GIU JUU f) is odd and g(t) is even 24. The curve represented by the equation x2 + y2 = a 2 is symmetrical about (A) y=-* (C) both x and y axes 25. The curve represented by the equation x y = x + 1 is symmetrical about (B) x-axis (D) y = x (B) x-axis only

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