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( f(x) = x^3 ) এবং ( g(x) = ln x ) হলে— i. ( int 1 f(x) dx = -1 x^3 + c ) ii. ( g'(x) = 1 x ) iii. ( lim_ x to 0 g(1 - 3x) 2x = -3 2 ) নিচের কোনটি সঠিক? | Suva Ai