Answers edited by Kha L.
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What is the derivative of #( cos (x) ) / ( 2 + sin (x) )#?

#int sin theta sin2theta sin3theta# ?

What is the Cartesian form of #(4,(21pi)/4))#?

What are the factors of 5 & 15?

One canned juice drink is 25% orange juice; another is 5% orange juice. How many liters of each should be mixed together in order to get 20L that is 6% orange juice?

What is the orthocenter of a triangle with corners at #(4 ,9 )#, #(7 ,4 )#, and (8 ,1 )#?

How do you find the absolute extrema of #f(x) = x^3 + x^2  4x  4# on the closed interval #[3, 0]#?

What is the equation of the line that is normal to the polar curve #f(theta)=2sin(3theta+pi/3)  2thetacostheta # at #theta = pi/4#?

How do you find the derivative of #f(x)=2x^3+x^27#?

What comes next in this sequence of prime numbers? 11, 13, 17, 19, ?

How do you name an angle between #0^circ# and #360^circ# that is coterminal with the angle #210^circ#?

Compute #i+i^2+i^3+\cdots+i^{258}+i^{259}#. ?

1, 2, 4 and 8 are factors of which number?
8, 6, 12, or 20?