Cho hai hàm số : \(f\left(x\right)=x^2\) và \(g\left(x\right)=3-x\)
a) Tính \(f\left(-3\right)\), \(f\left(-\dfrac{1}{2}\right)\), \(f\left(0\right)\), \(g\left(1\right)\), \(g\left(2\right)\), \(g\left(3\right)\)
b) xác định a để \(2f\left(a\right)=g\left(a\right)\)
1. They believe he is mad.
=> It ..........................................
2. It hasn't rained for five days.
=> It is ......................................
3. She thought that he was a fool to refuse their help.
=> She thought it .................................................
4. .................. only a couple ........... months in the country she got ........... the language difficult.
5. Everybody was looking ............. him .................. silence; and suddenly struck him that he was expected to apologize ............... something he hadn't done.
Mọi người giúp em với!!!!!!!!!!!!!!1
Cho đường tròn (O), đường kính AB. Vẽ đường tròn (I), đường kính OA. Bán kính OC của đường tròn (O) cắt đường tròn (I) tại D. Vẽ CH vuông góc AB. Chứng minh ACDH là hình thang cân.
Mọi người vẽ hình và chỉ hướng làm giúp em với!!!!!!
Tính:
a) \(\sqrt[3]{\left(\sqrt{2}+1\right)\left(3+2\sqrt{2}\right)}\)
b) \(\sqrt[3]{\left(4-2\sqrt{3}\right)\left(\sqrt{3}-1\right)}\)
c) \(\left(\sqrt[3]{4}+1\right)^3-\left(\sqrt[3]{4}-1\right)^3\)
d) \(\left(\sqrt[3]{9}-\sqrt[3]{6}+\sqrt[3]{4}\right)\left(\sqrt[3]{3}+\sqrt[3]{2}\right)\)
e) \(\sqrt[3]{20+14\sqrt{2}}+\sqrt[3]{20-14\sqrt{2}}\)
Mọi người giúp em với ạ!!!!!!!!!!!
Imagine that your Australian pen friend is coming to Dong Nai and will spend a day in your hometown/city. He/She has asked for your advice on the places of interest they should go to and the things they can do there. (Dong Nai Museum, Bien Hung Park and Tan Trieu Grape Fruit village)
Write an email to give him/her some information.
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