(cost）^4*(sint)^2+(cost）^2*(sint)^4如何化简为(cost）^2*(sint)^2?麻烦告诉下,

The total annual cost is the sum of annual material cost, annual order cost, and annual holding cost, and is given as TC = CD + (D/Q)S + (Q/2)hC.

在RIP路由协议进程中设定默认度量值为2的命令是( ) A: [H3C-rip-1]default 2 B: [H3C-rip-1]default cost 2 C: [H3C]default cost 2 D: [H3C]default 2

【单选题】y=f(x)=sinx,x(t)=t 2 ,d 2 y=()。 A. (2cost 2 -4t 2 sint 2 )dt 2 B. (2cost 2 +4t 2 sint 2 )dt 2 C. (cost 2 -4t 2 sint 2 )dt 2 D. (cost 2 +4t 2 sint 2 )dt 2

Fixed Cost，Veriable Cost，Explicit Cost，Implicit Cost，Opportunity Cost，Sunk Cost，Economic Profit，Normal Profit，Average Cost，Margial Cost

Three cost drivers are used to estimate the cost of processing insurance claims. The cost drivers are: (1) claim amount, (2) age of vehicle in accident and (3) age of driver in accident. The percentages attributable to the cost drivers are 50% for claim amount, and 15% for each of the other two cost drivers. What is the cost to process Claim #101? The claim amount is $1,000. The age of the vehicle is 5 years. The age of the driver is 20 years.

求下列曲线段的长度,曲线段y=∫(-π/2,x)(cost)^(1/2)dt

中国大学MOOC: The cost of these planes is $3 million, _________ the $ 2 million charged by their competitors.

This book______me twenty dollars. A: is cost B: was cost C: cost D: have been cost

已知空间曲线的参数方程为{x=a(cost)^2,y=a(sint)^2,z=asin2t(0