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What leads to increased propagation speed of sound?

Solve the following IVP: d y d x = 4 + 13 x x y 2 y ( 1 ) = 3 {“version”:”1.1″,”math”:”\begin{align*} \frac{dy}{dx} &= \frac{4 + 13x}{xy^2} \\[5pt] y(1) &= 3 \end{align*}”}(Show all sufficient work in steps and use the technique or method discussed in this course.)

Solve the following initial value problem: y ′ = 6 x y − 2 x y ( 0 ) = 3 {“version”:”1.1″,”math”:”\begin{align*} y’ &= 6xy – 2x \\[5pt] y(0) &= 3 \end{align*}”}(Show all sufficient work in steps and use the technique or method discussed in this course.)

ELDVs are not NDEs. The main difference is that NDErs recover, while ELDVs seem to prepare the ELDVer for death.   There are high rates of posttraumatic growth in ELDVers before they die. 

Give one example of a gene encoding for a “virulence factors” for pathogenic bacteria:

As frequency increases, the amount of scatter ________________.

A child of a father diagnosed with Huntington’s disease has a 50% chance of inheriting Huntington’s disease.

Find the area enclosed by the inside loop of the limaçon r=1-2cosθ{“version”:”1.1″,”math”:”r=1-2cosθ”}  (Show all sufficient work in steps and use the technique or method discussed in this course.)

  Sound is a mechanical longitudinal wave  

Part A — 4 points Write a polar equation of the parabola whose focus is at the pole and vertex at 10,0{“version”:”1.1″,”math”:”10,0″}. Part B — 4 points Is the polar point 403,π3{“version”:”1.1″,”math”:”403,π3″} on the parabola?