calculus vocabulary P16

let
{verb}

• allow [transitive not in passive] to allow someone to do something [↪ permit]:

I can't come out tonight - my dad won't let me.

• not stop something happening [transitive not usually in passive] to not stop something happening, or to make it possible for it to happen

let somebody/something do something

Jenny let the note fall to the ground.
Don't let anyone know it was me who told you.
Max let the door swing open.
Let the cookies cool down before you try them.

• mathematics let something be/equal/represent something technical used in mathematics to mean that you give something a particular measurement or value in order to make a calculation:

Let angle A equal the sum of the two opposite sides.


express
{verb}

• feeling to tell or show what you are feeling or thinking by using words, looks, or actions

express your views/opinions
Bill's not afraid to express his opinions.
Parents have expressed their concerns about their children's safety.
She expressed an interest in seeing York.

express something in/by/through something
Express your reasons for applying in simple terms.
express sympathy/fear/anger etc
She doesn't express her emotions as much as he does.
express thanks/gratitude (for something) (to somebody) (=thank someone in a speech or by writing a letter)
Finally, I'd like to express my sincere thanks to all those who have helped today.
express doubts/reservations
The USA expressed reservations before agreeing to sign the agreement.
Many people have expressed their opposition to the proposals.
express yourself (=say what you think or feel)
Young children often have difficulty expressing themselves.
He first learnt to express himself through movement at his dance classes.
Words can't express (=it is impossible to describe) how angry we felt.

• articular emotion to show or describe a particular feeling:

Many of Munch's paintings express a deep feeling of despair.

• something expresses itself if something expresses itself, it becomes noticeable [= something reveals itself]:

Religious faith expresses itself in a variety of ways.

• mathematics technical to change an amount or quantity into a different form, especially in mathematics

express something as/in something
Express three-quarters as a decimal.
The value of the coffee becomes significantly higher when expressed in foreign currency.

• feeding babies if a woman expresses milk, she presses milk out of her breast in order to feed it to her baby later

eliminate
{verb}
[transitive]

• to completely get rid of something that is unnecessary or unwanted

eliminate a need/possibility/risk/problem etc
The credit card eliminates the need for cash or cheques.
The teacher should try to eliminate the possibility that the child has a hearing defect.
eliminate something/somebody from something
Fatty foods should be eliminated from the diet.

• [usually passive] to defeat a team or person in a competition, so that they no longer take part in it:

Our team was eliminated in the first round.

• to kill someone in order to prevent them from causing trouble:

a ruthless dictator who eliminated all his rivals

• eliminate somebody from your enquiries British English if the police eliminate someone from their enquiries, they decide that that person did not commit a particular crime