If `frac{0.3}{2x}=frac{0.4}{2.4}` then x=?

solve the equations: frac{2}{sqrt x} + frac{3}{sqrt y} =2 and frac{4}{sqrt x} - frac{9}{sqrt y} =-1

x frac{dy}{dx} = y - xcos^2 frac{y}{x}

If f(x) = x^3 - frac{1}{x^3} then f(x)+f(1/x)= (A)2 x^3 (B) 2/x^3 (C) 0 (D) 1

cos frac{3pi}{4}-iota sin frac{3pi}{4}

dy/dx = cos frac{x}{2} / 2

frac{dP}{dx} = frac{d}{dx} (x^3) (frac{7-2x}{3})^(4)

dy/dx = frac{2x+y}{x}

Sameera purchased 3 frac{1}{2} kg apples and 4 frac {3}{4} kg oranges. What is the total weight of fruits purchased by her?

3frac{1}{13}+1frac{4}{13}+2frac{3}{13}

frac{1}{sqrt7-4} frac{1}{sqrt11-7}