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2 years ago

Solve for x.

Mathematics

2 answers:

Leto [7]2 years ago

5 0

Answer:

x²+9x=0

x(x+9)=0

either

x=0

x=-9

OverLord2011 [107]2 years ago

4 0

Answer:

A. 0, - 9

Step-by-step explanation:

Given

x² + 9x = 0

x (x + 9 ) = 0

Either

x = 0

or,

x + 9 = 0

x = - 9

Hope it will help :)

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(i) Given that

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V[R_] := Integrate[2 Pi v[r] r, {r, 0, R}]

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$\displaystyle \int_0^R 2\pi K(R^2-r^2)r \, dr$

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In M, redefine the velocity function as

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Then run

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This may take a little longer to compute than expected because M tries to generate a result to cover all cases (it doesn't automatically know that R is a real number, for instance). You can make it run faster by including the Assumptions option, as with

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