Задайте формулой хотябы одну функцию f(x) , если её производная  f"(x)= 4 x^3 - 1\sin^2x

Найдите объем правильной треугольной пирамиды, у которой каждое ребро равно 3 см.

текст-розповідь про герб нашої держави?

Сумма первых трех членов геометрической прогрессии равна 28, сумма следующих трех членов равна 3,5. Найдите восьмой член прогрессии.

Переделайте текст в косвенную речь.
Dad: What is up? Why are you acting so nervous?
Tim: If's because of Julia. She used to criticize me all the time and enjoyed making fun of me but now she wants me to be her partner at the school dancing contest
Dad: What's the problem then? You don't feel confident enough do you?
Tim:Far from that.I've never danced in my life. I mean I've never danced a waltz or anything like that.She did it on purpose I think.She wants everyone to laugh at me.
Dad: Relax .I think you should accept her invitation.But suggest a contrary idea - she should take part in the cycling competition along with you next month.
Tim:It would be rather challenging for her, I bet.But, Dad, I'll never be able to waltz!
Dad:Did I ever tell you that once your dad took the first prize in the city dancing contest?I'll teach you myself, buddy And in a week you'll be the best dancer in your school!
Tim:You are a great dad!Will you come to the contest to support me?
Dad:Mmm, ..do they provide coffee and sandwiches there?