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Hello,
I am a mother of two children,Year 9 and year 6 at British School of Bucharest,Romania.I want them to make preparation at Math because my concern is that in school they don't understand everything. Do you make preparation at Math in British system?
Thank you so much!

What I need to calculate and project in hffs an antenna with parabolic reflector that will contain the reflector and the primary source. Band is :9-10Ghz, liniar polarization, reflection coeficient s11 < -15dB and gain is G=32dB. open angle in horizontal plane is 1 degree and open angle in vertical plane is 20 degree. I need all the calculations...