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Differentiate y=(x^2+1)(e^-x)

Here, we're using the product rule (and the chain rule for the e -x ): y=(x 2 +1)(e -x ) dy/dx=(2x)(e -x )+(x 2 +1)(-1)(e -x ) Then we simplify to get: dy/dx=(e -x )(2x-x 2 -1)
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Answered by Rishav D. • Maths tutor
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Macroeconomic policy can both be a problem and a solution in economic fluctuations. Explain.

Macroeconomic policy, which is a term to describe fiscal policy and monetary policy, can often be a problem during economic fluctuations. Greece is a good example of this. As a result of their sovereign debt...
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Answered by Rishav D. • Economics tutor
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What is the angular speed of a car wheel of diameter 0.400m when the speed of the car is 108km/h?

A) 75 rad/s B) 150 rad/s C) 270 rad/s D) 540 rad/s Identify equation as w=v/r Diameter = 0.4m Radius = half the diameter = 0.2m Velocity needs to be in m/s so 108km/h = 108000m/h = 30m/s (divide by 60 twice)...
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Answered by Edward W. • Physics tutor
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Explain the possible causes of deflation in an economy. (15)

Deflation is defined as the fall in the general price level of an economy. It is negative inflation. It is usually calculated using the consumer price index (CPI) which measures changes in the price level of...
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Answered by Edward W. • Economics tutor
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To what extent was the rise of militant African American protests responsible for limiting the effectiveness of the civil rights movement in the 1960's

Intro should introduce the 'militant African American protests' properly to show examiner you know what they're referring to (black panthers). Then, briefly describe the relationship they had with the peacef...
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Answered by Chibueze P. • History tutor
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