area = width * length = 2width^2
d area/dt = 4width dwidth/dt
when area=32in^2,width=4
so d area/dt = 4*4*2 = 32 in/s
the length of a rectangle is twice its width.
the length of a rectangle is twice its width.
the length of a rectangle is twice its width.If the width of the rectangle is changing at 2in/s,how fast is the area of the rectangle changing when the area is 32 in^2?
the length of a rectangle is twice its width.If the width of the rectangle is changing at 2in/s,how fast is the area of the rectangle changing when the area is 32 in^2?
英語人氣：931 ℃時間：2020-02-03 21:25:30
優(yōu)質(zhì)解答
我來回答
類似推薦
- If the perimeter of a rectangle is 40cm ang its length is x cm ,then the width is what?
- 請翻譯 The following diagram is a piece of rectangle-shaped grassland,and its length and width are respectively 16 and 10.T
- A rectangle is 6 cm long.If the perimeter of the rectangle is 28 cm,find the width of the rectangle
- The area of a rectangle is 60 cm2.The length of the rectangle is 12 cm.Determine the perimeter of
- the length of a rectangle 什么意思
- 如圖,在平行四邊形ABCD中,E,F分別是BC,DC的中點,G為交點.若AB=a,AD=b,試以a,b為基底表示DE,BF,CG.(a,b,AB,AD,DE,BF,CG均為向量）
- 描寫雨聲的句子
- 三角函數(shù)的變換公式有哪些?
- 難解的幾何題
- 《海濱仲夏夜》的特點
- 一個三角形和一個平行四邊形的面積和底都相等.三角形的高是5cm,平行四邊形的高是（）cm
- 已知關于x的方程a（3x-2）+b（2x-3）=8x-7 問題看下!
猜你喜歡
- 11/2+3/4+7/8+15/16簡算
- 2英語翻譯
- 3104.79用英文怎么表達
- 4已知,p：2x^2-9x+a
- 5英文達人來幫忙解釋下.
- 6求函數(shù)y=(lnx)^1/X微分dx
- 7已知拋物線y=x²-x+a與x軸的兩個交點之間的距離為√5.第一象限內(nèi)的點A在拋物線上,且點A的縱坐標為1
- 8AB距31km,甲從A到B,一小時后乙也從A地去B地.已知甲每時行12千米,乙每時行28km.乙0.75h追上甲
- 9雙重否定句怎么改
- 10有一吊車,纏繞其上的鋼絲繩的最大承受力為10^3牛,次吊車能否勻速提升重為2.8×10^3牛的小轎車要公式
- 11已知直線L與直線y=-2x+8的交點橫坐標為2,與直線y=-2x-8的交點縱坐標為7,求直線L解析式.
- 12六（1）班男生人數(shù)的五分之二等于女生的七分之四,男生比女生多9人,這個班有多少人?