3 years ago

Differentiate f(x)=x^2sin(x)

Mathematics

1 answer:

yanalaym [24]3 years ago

6 0

x^2 cos(x)+2x sin (x)

Hope this helps!

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Six oranges cost $ five dollors how much does one orange cost

Yanka [14]

0.89 cents per orange. $5.34/6 = 0.89 cents.

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3 years ago

Given $m\geq 2$, denote by $b^{-1}$ the inverse of $b\pmod{m}$. That is, $b^{-1}$ is the residue for which $bb^{-1}\equiv 1\pmod

goblinko [34]

$(2+3)^{-1}\equiv5^{-1}\pmod7$ is the number L such that

$5L\equiv1\pmod7$

Consider the first 7 multiples of 5:

5, 10, 15, 20, 25, 30, 35

Taken mod 7, these are equivalent to

5, 3, 1, 6, 4, 2, 0

This tells us that 3 is the inverse of 5 mod 7, so L = 3.

Similarly, compute the inverses modulo 7 of 2 and 3:

$2a\equiv1\pmod7\implies a\equiv4\pmod7$

since 2*4 = 8, whose residue is 1 mod 7;

$3b\equiv1\pmod7\implies b\equiv5\pmod7$

which we got for free by finding the inverse of 5 earlier. So

$2^{-1}+3^{-1}\equiv4+5\equiv9\equiv2\pmod7$

and so R = 2.

Then L - R = 1.

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3 years ago

A train from Point Pleasant leaves at 5:47 am and arives in Long Branch 33 minutes later. After waiting at the Long Branch stati

Gennadij [26K]

This can be accomplished using addition. If time starts at 5:47, and it takes 33 minutes to get from Point Pleasant to Long Branch, then it is now 6:20.
After you arrive, you waited 14 minutes. It is now 6:34. Finally, it's an hour and 20 minute journey from Long Branch to New York. The final time is 7:54.

Hope this helps!
-Astro, Helper-In-Training

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3 years ago

Various types of doctors attended a large medical conference. Someone leading a session asked the 30

Vika [28.1K]

Answer: The dermatologists at that session only

Step-by-step explanation:

It was on a Khan Academy practice.

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3 years ago

The area of a triangle is 24 square inches. What is the height of the triangle if the base length is 6 inches?

ikadub [295]

The height should be 8 because the area of a triangle is b*h/2 so 6*8= 48/2=24 so the height is 8.