Answer:
Step-by-step explanation:
![y = sin(xy)\\\frac{d}{dx}y=cos(xy)(\frac{d}{dx}(xy))\\ \frac{d}{dx}y = cos(xy)(y + x*\frac{d}{dx}y)\\ write \: \frac{d}{dx}y \: as\:y'\\y' = cos(xy)(y+xy')\\y' = ycos(xy) + xy'cos(xy) \\y'-xy'cos(xy) = ycos(xy)\\y'(1-xcos(xy)) = ycos(xy)\\\\y' = \frac{ycos(xy)}{1-xcos(xy)}](https://tex.z-dn.net/?f=y%20%3D%20sin%28xy%29%5C%5C%5Cfrac%7Bd%7D%7Bdx%7Dy%3Dcos%28xy%29%28%5Cfrac%7Bd%7D%7Bdx%7D%28xy%29%29%5C%5C%20%20%5Cfrac%7Bd%7D%7Bdx%7Dy%20%3D%20cos%28xy%29%28y%20%2B%20x%2A%5Cfrac%7Bd%7D%7Bdx%7Dy%29%5C%5C%20write%20%5C%3A%20%5Cfrac%7Bd%7D%7Bdx%7Dy%20%5C%3A%20as%5C%3Ay%27%5C%5Cy%27%20%3D%20cos%28xy%29%28y%2Bxy%27%29%5C%5Cy%27%20%3D%20ycos%28xy%29%20%2B%20xy%27cos%28xy%29%20%5C%5Cy%27-xy%27cos%28xy%29%20%3D%20ycos%28xy%29%5C%5Cy%27%281-xcos%28xy%29%29%20%3D%20ycos%28xy%29%5C%5C%5C%5Cy%27%20%3D%20%5Cfrac%7Bycos%28xy%29%7D%7B1-xcos%28xy%29%7D)
Answer:
I’m going to generalise the answer in the hope of preventing a billion questions with the % changed a little.
If you have a calculator X% just means multiply by X and divide by 100.
If you don’t have a calculator or paper handy, you can split the problem: I’ll do it for 25% but in this case the other answers are simpler.
25%=10%+10%+5%.
Now 10% is easy, just move the decimal one place to the left, for instance 35 becomes 3.5.
5% is half of 10% 3.5/2=1.75
Add it all up: 3.5+3.5+1.75= 8.75. Done.
You don't even need to know multiplication above 5x tables, for instance
37% is 10%+10%+10%+7% but that requires multiplying by 7.
37% is also 10%+10%+10%+10% -3% only requiring 3x table.
I'm not sure if this is what you mean but here ya go
Answer:
3/5
Step-by-step explanation:
3/5
That would be 3
33:21....same as 33/21 which when each number is divided by 3, becomes 11/7 or 11:7