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Here is a numerical solution comparison using initial conditions 0 (yy) and 1 (y)

You can see that although y(0) = 1 gives rise to a changing curve, y(0) doesn't.

Why does it mean y never changes from zero?

When you fill in y=0 and x=0, in dy/dx don't you only  get the change in (0,0) instead of all values for x.

Since y=0 is a solution for y and since I can't fill in 0 in the my implicity solution doesn't this mean my solution is incomplete?

the divide sign

Then the solution is y(x) = 0 for all x.

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Yes I'm sure about y(0)=0

Part A was solve for y(0)=1

And in part B I have to solve for y(0)=0

Use the fact that mass = density * volume

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If y(0) = 0 then dy/dx(0) = 0 as well. This means y never changes from zero!

Are you sure y(0) = 0?

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Standard error on the mean is standard deviation/sqrt(sample size) = 5/7 ≈ 0.714

Number of standard errors between 50 and 47.7 = (50 - 47.7)/0.714 ≈ 3.22

Probability of being more than 3.22 standard errors away from the mean on a normal distribution ≈ 0.0007

Hence probability sample average is greater than 47.7 is ≈ 0.9993

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1.44

In Guest #1's reply the upper limit should be 74 rather than 75.  This makes the sum 140600.

The sum can also be expressed as ∑[n(n +1) → ∑n² + ∑n  

∑n² for n = 1 to N is given by N(N+1)(2N+1)/6

and

∑n  for n = 1 to N is given by N(N+1)/2

Using N = 74, these can be used to find the overall sum of 140600.

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My guess is that this is meant to be \(\sqrt3i\) - but that's just a guess!

To 17 dp we have:

Of course \(\sqrt3\) cannot be expressed exactly as a fraction.

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Between -2 and -4 !!!!!???

Confused about scientific notation ie. 4.28x10^28x1/6.2x10^29x6x20.001

\(4.28*10^{28}*\frac{1}{6.2}*10^{29}*6*20.001\\ =\frac{4.28*1*6*20.001}{6.2}*10^{29}*10^{28}\\ =\frac{4.28*6*20.001}{6.2}*10^{57}\\ =\frac{4.28*6*20.001}{6.2}*10^{57}\\ \approx 82.84285161*10^{57}\\ \approx 8.284285161*10*10^{57}\\ \approx 8.284285161*10^{58}\\\)

LUKEWARM!!

models the ball's height about the ground, h, in feet, t seconds after it was thrown.

What is the maximum height of the ball?

How many seconds does it take until the ball hits the ground?

what is n/7=47r3? help me i have to submit it tomorrow.

I'll do a different one and you can copy the method   

q/5=19r2

\(\frac{t}{5}=19r2\\ \frac{t}{5}=19\frac{2}{5}\\ \frac{t}{5}=\frac{5*19+2}{5}\\ \frac{t}{5}=\frac{97}{5}\\ t=97 \)

each melon is $1.39 todd has bought 30 watermelons todd has 50 bucks todd sells 2 melons for $2.00 how much money does he have left  

30 x $1.39 =$41.70 cost of 30 watermelons

$50 - $41.70 =$8.30 he has left after the purchase of 30 watermelons

2 x $2.00 =$4.00 he got from the sale of 2 watermelons

$8.30 + $4.00 =$12.30 he has left in his pocket.

Press "2nd" key in the top left hand corner. You will see "asin", which is the same as sin^-1.

Yes!!!  529 = 23 x 23

I have never seen a complex number expressed as a fraction!!. The decimal part can be written as this fraction: 1 80198051/109552575i   !!!!!!. Alan: Look at this strange contraption, please.

around 13.7

I think this requires the cosine function:

1,380 + 1.8 =1,381.8 meters - the height to his eye level

Cos(29) =1,381.80 / Distance to the shale

0.87462=1,381.80 / Distance to the shale

Distance to the shale =1,381.80 / .87462

Distance to the shale =~1,580 meters.

Be persistent and practice! Get on the net, YouTube, math sites and you'll be amazed what topics you will find! You can do it, it's hard work and worth it. Tell your friends to stop screaming in n the class and buy your teacher a coffee and a Tylenol.teaching isn't an easy gig. They have to deal with a lot of behaviours in the room, and then go home feeling guilty because they know their time would have been better spent helping the math haters ( you do t hate it, your confusion makes you frustrated and you get to the point where you give in or snap. Take it upon yourself to do more practice at home, and get up to that desk to ask questions. That what teachers get paid for, and most love their job. Good luck and get at it:)