EJU Mathematics Course 2 practice 131: Using the accompanying practice context, for f(x)=5x²+2x, find f′(7).
Choose an option to check your answer.
f′(x)=10x+2; substitute x=7.
Practice EJU Mathematics Course 2 questions with answers and explanations.
Choose an option to check your answer.
f′(x)=10x+2; substitute x=7.
Choose an option to check your answer.
An antiderivative is 6x²+5x, giving 424.
Choose an option to check your answer.
The conjugate changes the sign of the imaginary part.
Choose an option to check your answer.
z=(x−mean)/sd=2.
Choose an option to check your answer.
Repeated multiplication gives 31381059609.
Choose an option to check your answer.
Repeated multiplication gives 31381059609.
Choose an option to check your answer.
An antiderivative is 6x²+6x, giving 432.
Choose an option to check your answer.
The conjugate changes the sign of the imaginary part.
Choose an option to check your answer.
z=(x−mean)/sd=2.
Choose an option to check your answer.
Repeated multiplication gives 31381059609.
Choose an option to check your answer.
log x + log y = log(xy).
Choose an option to check your answer.
The sum is 3(1+…+5)=3×15=45.