展开 c\H(r(o,s,x),o,s,x)adr(o,s,x)ados(x-2x=6)

解答

展开

c H (r (o, s, x), o, s, x) a d r (o, s, x) a d os (x - 2 x = 6)

c aa s x H (,,, os x r (,, os x)) d r (,, os x) d o - 2 c aa s x H (,,, os x r (,, os x)) d r (,, os x) d o = 6

求解步骤

c H (r (o, s, x), o, s, x) a d r (o, s, x) a d os (x - 2 x = 6)

= c aa s H (,,, os x r (,, os x)) d r (,, os x) d o (x - 2 \cdot 6 = x)

使用分配律:

a (b - c) = ab - a c

a = c H (r (o, s, x), o, s, x) a d r (o, s, x) a d os, b = x, c = 2 x = 6

c H (r (o, s, x), o, s, x) a d r (o, s, x) a d os x - c H (r (o, s, x), o, s, x) a d r (o, s, x) a d os \cdot 2 x = 6

c aa s x H (,,, os x r (,, os x)) d r (,, os x) d o - 2 c aa s x H (,,, os x r (,, os x)) d r (,, os x) d o = 6

s im pl i f y \frac{12.9}{( s + 1.1 ) ( s + 2 )}

s im pl i f y x^{3} (\frac{1}{x} - sin (\frac{1}{x}))

e x p an d \frac{x}{( x + 2 ) ( x + 3 )}

\frac{d}{d x} ((f (x, y)) (x + x^{2} - y^{2}))

e x p an d \frac{ab}{( sc + b ) ( s d + a )}