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ditchwater    
n. 沟中的死水

沟中的死水


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  • Simplifying mixed examples with powers? - Socratic
    a^(13) (a^5)^3 a^2 = (a^(5*3)) a^2 = (a^(15)) a^2 = a^(15-2) = a^(13)
  • Question #61851 + Example - Socratic
    Use specific reasons and examples to support your answer Nowadays, the pollutION OF THE environment is a big concern FOR the government and all of the people ON the earth If a company is going to give some money either to support the arts or to protect the environment, some people think that the company should support the artS
  • A 3. 0 mol gas sample occupies 6. 0 liters at 25 °C. What is . . . - Socratic
    A 3 0 mol gas sample occupies 6 0 liters at 25 °C What is the pressure of the gas in kPa’s? ChemistryGasesIdeal Gas Law 2 Answers anor277 Dec 2, 2015
  • Question #1ae29 - Socratic
    In our case, we want the quadratic polynomial with roots #+-i#, and so we have
  • Question #fc79a - Socratic
    See below This is a linear nonhomogeneous differential equation so the integrating factor is determined for the homogeneous part which is (1+x^2)y'_h+3xy_h=0 The homogeneous part is separable so (3x) (1+x^2) dx+(dy_h) y_h=0 and after integration we obtain 3 2log(1+x^2)+log(y_h) +C=0 or y_h = C_0 (1+x^2)^(3 2) now making and substituting y= (C_0(x)) (1+x^2)^(3 2) into the complete differential
  • Question #af811 - Socratic
    Suppose that [a] x>0 [b] 1 x +x=2 are two condition that hold and suppose that this implies not x^2+1 x^2=1 x+x Then either x^2+1 x^2<1 x+x or x^2+1 x^2>1 x+x has to hold Suppose it's x^2+1 x^2<1 x+x Then using [b] on the right term we get x^2+1 x^2<2, both terms of which can be multiplied by x^2 (x ne 0 thanks to [a]) to get x^4-2x^2+1<0 We recognize the structure of a square of a
  • Question #e491a - Socratic
    See explanation First we can calculate sin (x 2) and cos (x 2) using the double angle formula: cosx=cos^2 (x 2)-sin^2 (x 2)=2cos^2x-1 So we can calculate the cosine by solving: 2cos^2 (x 2)-1=-4 5 2cos^2 (x 2)=1 5 cos^2 (x 2)=1 10 cos (x 2)=-sqrt (10) 10 vv cos (x 2)=sqrt (10) 10 If pi < x< 3 2pi then pi 2< x 2 < 3 4pi, so x 2 lies in the 2nd quadrant, so only sine is positive cos (x 2
  • Can anyone please answer this chemistry difficulty? - Socratic
    Step 1 Write the half-reactions for the cell We have here a concentration cell, In which the two half-cell reactions are the same, but the concentrations are different





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