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don't satisfy the first eqn

your time is up

p^2 + q^2 + r^2 = 3 p + q + r =1 p + 2q - r = 5 Please check the equations

Anyone can do it. Use equation editor (left arrow) and draw (right arrow) in microsoft office word.

so describe the locus

I think this is done already. Try this: Describe fully the locus of |z+5| - |z-5| = 8

1+cos\frac{\pi }{7}+isin\frac{\pi }{7}=r(cos\theta +isin\theta )\\\therefore 1+cos\frac{\pi }{7}=rcos\theta \and\\sin\frac{\pi }{7}=rsin\theta \\\therefore tan\theta =\frac{sin\frac{\pi }{7}}{1+cos\frac{\pi }{7}}=\frac{2sin\frac{\pi }{14}cos\frac{\pi }{14}}{2cos^{2}\frac{\pi }{14}}=tan\frac{\pi...

G-force is a measure of acceleration not counting the force due to gravity. Is there a g-string in the string theory?

like this type of questions you don't do it the usual way

Plot 1+cis(pi/7) in the complex plane to see it.

Numerator=rcis(pi/14) Denominator=rcis(-pi/14) Fraction=cis(pi/7) (fraction)^7=cis(pi)=-1

The question: A football is kicked at ground level into the air at an angle of 30 deg to the horizontal. The speed at take off is 10 m/s. Find the time when it hits the ground. If you try this question, please list all the assumptions that you have to make. Quoting your words: 'The assumptions...

your working ok, (pq - r)/(2(q - p²))

good point but more

There are plenty more assumptions.

My humble opinion: Your path is right if the magnitude of the train's acceleration increases (or the fan blowing stronger at the mass) after the breakage of the string.

I did not look at the other information given in the question. I have made many assumptions in the following answers. a. Why does the mass hang with the string at an angle to the vertical? Due to the appearance of a horizontal fictitious force on the mass while the train is moving to the right...