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Find the range of a degree-2 polynomial function such as 2x^2 +1, or x^2 + 2x - 3.

There are 3 methods for finding the range of a polynomial fucntion. This is good news because if you arrive at the same answer using these methods you wil be more confident that it is the correct answer.T...

Answered by Douglas H. • Maths tutor

2942 Views

What is the different between the preterite and imperfect tense?

Conjugation is not as common in English as it is in Spanish, especially in the past tense. Unlike English, there are two versions of the Spanish past tense called the Preterite and

Answered by Anna R. • Spanish tutor

2422 Views

What is the double angle formula?

The double angle formula is how to combine/split trigonometric functions so that they can be integrated or simplified using identities. For example, cos (a+b)= cos(a)cos(b) - sin(a)sin(b) , which can be e...

Answered by Robert W. • Maths tutor

3387 Views

Write equations for the reaction of propanoic acid with methanol and name any organic products.

This reaction is the formation of an ester because the reactants are a carboxylic acid and an alcohol.
Propanoic acid has 3 carbons and will have the functional group COOH:
CH₃CH_...

Answered by Bethan H. • Chemistry tutor

33378 Views

Simplify 125^(-2/3)

Simplify 125^-2/3
A negative indices means that we need to reciprocate the number or "flip it":
125^-2/3 = (1/125)^2/3
A fractional indices can be sp...

Answered by Bethan H. • Maths tutor

4536 Views