What is expand (cos(x))(y+dy) ?

The solution to expand (cos(x))(y+dy) is ycos(x)+cos(x)dy

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expand (cos(x))(y+dy)

expand

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

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

Solution steps

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

Apply the distributive law:

a (b + c) = ab + a c

a = (cos (x)), b = y, c = d y

= (cos (x)) y + (cos (x)) d y

= y (cos (x)) + (cos (x)) d y

Remove parentheses:

(a) = a

= y cos (x) + cos (x) d y

\frac{n ^{n^{3}}}{( n - 1 ) ^{2}}

π (a y - \frac{y ^{2}}{2})

7 (- 4 x + 9 y = 28)

1.67 (1.67 q + 5 = - 2.5 q + 42.5) + 5

(4 m + 3) (- 4 m - 5)^{\circ}

What is expand (cos(x))(y+dy) ?
The solution to expand (cos(x))(y+dy) is ycos(x)+cos(x)dy