close
標題:
please help me,my homework
發問:
1. Make R the subject of the formula S=a/1-R 2. Make a the subject of the formula t^2-at+a+1=0 3. Make v the subject of the formula 1/f=1/u+1/v
最佳解答:
1. S=a/1-R S + R = a/1 - R + R S -S + R = a/1 - S R=a/1 - S 2. t^2 - at + a + 1 = 0 t^2 - a(t-1) + 1 = 0 t^2 - t^2 -a(t-1) + 1 -1 = 0 - t^2 -1 -a(t-1) = -t^2 -1 -a(t-1) / (-(t-1)) = -(t^2 +1) /(-(t-1)) a = (t^2 +1)/(t-1) 3. 1/f = 1/u + 1/v 1/f - 1/u = 1/v (u - f)/fu = 1/v v= fu/(u-f)
其他解答:
please help me,my homework
發問:
1. Make R the subject of the formula S=a/1-R 2. Make a the subject of the formula t^2-at+a+1=0 3. Make v the subject of the formula 1/f=1/u+1/v
最佳解答:
1. S=a/1-R S + R = a/1 - R + R S -S + R = a/1 - S R=a/1 - S 2. t^2 - at + a + 1 = 0 t^2 - a(t-1) + 1 = 0 t^2 - t^2 -a(t-1) + 1 -1 = 0 - t^2 -1 -a(t-1) = -t^2 -1 -a(t-1) / (-(t-1)) = -(t^2 +1) /(-(t-1)) a = (t^2 +1)/(t-1) 3. 1/f = 1/u + 1/v 1/f - 1/u = 1/v (u - f)/fu = 1/v v= fu/(u-f)
其他解答:
此文章來自奇摩知識+如有不便請留言告知
1. R = S - 1/a 2. t^2+a(1-t)+1 = 0 a(t-1) = t^2+1 a = (t^2+1)/(t-1) 3. v/f = v/u +1 v(1/f -1/u) =1 v(u-f)/uf = 1 v = uf/(u-f)
文章標籤
全站熱搜
留言列表
