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Popular >

expand (x+dx)(y+dy)

Solution

expand

(x + d x) (y + d y)

Solution

x y + x d y + y d x + d x d y

Solution steps

(x + d x) (y + d y)

Apply FOIL method:

(a + b) (c + d) = a c + a d + b c + b d

a = x, b = d x, c = y, d = d y

= x y + x d y + d x y + d x d y

= x y + x d y + y d x + d x d y

Popular Examples

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Frequently Asked Questions (FAQ)

What is expand (x+dx)(y+dy) ?
The solution to expand (x+dx)(y+dy) is xy+xdy+ydx+dxdy