найти производную функцию

 

y= 1 *(2x+1)

    x

вагон массой 50 т столкнулся с с другим вагоном.В результате столкновения первый вагон получил ускорение,равное 6м/с^2,а второй-12 м/c^2.Определите массу второго вагона

Нужно координировать предложение с временами

Пример 

He said "I am coming" -> He said that he was coming
He Says "I have come" -> He sais that he has come

______________________________

He said “They are singing a song now.”

He says “He is wearing shoes.”

He says”They are watching TV”.

He said “Tom is writing a letter”.

He said ” My uncle is eating an apple.”

He said “Ann buys  toys”.

They said “The teacher explains the lesson”.

They say “The old man waters trees every morning”.

He said “The boy caught a butterfly yesterday.”

The boys said “The workers built cottages”.

She says “Their relatives dug the ground”.

He said “All the pupils were singing a song”.

My uncle says “The old woman was sweeping the ground”.

He said “Iwas tearing all my albums”.

будьласка...поможіть..срочно..*

Придумайте таке завдання, щоб у потомстві від батьків з різними фенотипами всі особини були однаковими за фенотипом.