Recent content by gurudon

Hey guys can anybody help me finding a software for video tutorial? I will me more thankful if anybody suggest me drawing software too...

I shall be thankful if anyone help me to arrange the category in center in phpbb3. for example like of this physics forums. Here all the category are managed in center. category like Physics, Science Education, Astronomy & Cosmology and so on...

thanx a lot. do you have any idea regrading open source image compressor?

1.Hey friends I Want to Compress the image in order upload them in my website. I have scanned them now what i need to do is to reduce their size. For that i need open source software to compress them. so, will anybody help me for finding it. 2. Next problem is i have made graph using...

I want to know how to post equation in website. I want to start site myself but the equation which i have typed in Word 2007 are not professional to update in site so which software i can use so that i can update equation as well as graph in website.

mathforum is also not bad..

satisfied from this link... i was cleared after going through this. http://www.mathsisfun.com/multiplying-negatives.html

hey friend can anybody give answer? why (-) * (-) = (+)