Primarygun

Given that f(x)=x+sinx f(pi)=? I saw many textbooks say f(pi)=pi But isn't it f(pi)=1/2?

thank you

When I press the right button of my mouse, a large no. of options appear as I downloaded too many extension. May anyone tell me how to reduce this large no.? Thx

Thanks. What should I do then if the window coming out showing the undesirable stuff?

Sorry guys, I'm afraid we should talk more about the maths things, otherwise, my thread will be removed.

We need to use molten compound instead of an aqueous solution, right? I know very little about it. Below's my idea. The fact is just like that of electrolysis of sulphate, nitrate.

Mine is a Casio FX-3650. It allows me to construct some programs!

My computer is in this superb condition. One 1, all other 0

Hi everyone. I want to inert a program in my portable calculator, a small one. Particularly, I want to use it to find the roots of equations with a degree as high as 4, involving trigonometry. In fact, there are many programs I can choose but I have no idea which gives me the answer the fastest. Iteration Method/False Position Method, or Regula Falsi/Secant Method/Iteration Method/ Newton's Method.

Mine is a poor idea. Thanks

A=x+4/3 t For the variable in the pyth. theorem.

I thought of getting out the sulphate by adding excess lead(II) nitrate. Then, add excess con. HCl to remove the lead(II) ion. And then, for the iron(II) ion, bubble chlorine gas into it. Lastly, to remove the nitrate ion, adding excess hydroxide into it. Due to the redox reaction, nitrate is reduced to nitrogen dioxide. But I am not sure whether it is correct. Probably not as chlorine forms hypochlorite ion and not all nitrate could be removed completely.

How do you get Iron(III) chloride from a solution of acidified Iron(II) sulphate. Please ensure there's no sulphate ion left. What does "Oxidizing flame" mean?

Yes, this is supposed to be the simpliest, the most common method to solve it. But, why my method is incorrect?

A___________ | 6m B

The web site offers lots of accurate infomation?

Thanks guys. We compute the Impedance matching only for maximum power? And, why does the proof of Vp/Np=Vs/Ns involves power input=power output?

5.5 miles on the road?

When I let x=A+4/3t, why can't I get the answer?

We get energy from burning fossil fuels. The power 50 W we could get is fixed. P=IV. We just supply the electrical energy produced to a complete circuit which connects with a light bulb of resistance 10 ohms. We apply the initial EMF as 240k V as high as the power station used to apply. By P=IV, I=1/(240k). Now,a current I=1/240k is flowing through the bulb. Using P=I^2R, P used up by bulb is not equal to the one from burning fossil fuels. Why?

And swansont, sorry please assume light bulb's resistance is relative a constant/ The current is fixed as we fix the emf. So, how does the resistor affect the circuit?

Thank you.

Is it possible to burn in the process of making ethanoic acid by acidified potassium dichromate? Moreover, is only the vapour responsible for burning?

Here's a simplified question and my question 2. I hope you guy may neglect the original one. In a complete circuit, a substance is providing energy at a fixed rate, say P. A light bulb of resistance R is connected in series. P=VI, We apply a desired voltage V1.( like the case generated by a transformer) Now, what's power consumed by the bulb. I found that I couldn't use V=IR. Please help me.

But, we can't say that the power for the 2nd coil increases, so V increases, right?