Question

if the function f is defined by the equation f9x,y)=x^2y^3 and f(a,b)=10, what is the value of f(2a,2b)

Answer 1

\[f(x,y) = x^{2}y^{3}\rightarrow f(a,b)= a^{2}b^{3} = 10\]
\[f(2a,ab) = (2a)^{2}(2b)^{3} = (4a^{2})(8b^{3})=32a^{2}b^{3}=32(10)=320\]

Answer 2

oops, that 'ab' in the function should be 2b

Answer 3

thank u...:)