3 years ago

PLEASEEE HELPPPPPPPP JSBSJSBDSB

Mathematics

1 answer:

Alex777 [14]3 years ago

6 0

Answer:

-11

Step-by-step explanation:

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Hello all, this is for an assignment in my Calculus 2 class. I'm submitting it online, and it keeps saying my answer is wrong :(

kolezko [41]

$\bf \displaystyle \cfrac{1}{5-2}\int\limits_{2}^{5}\ \cfrac{t}{\sqrt{5+t^2}}\cdot dt\\\\
-----------------------------\\\\
u=5+t^2\implies \cfrac{du}{dt}=2t\implies \cfrac{du}{2t}=dt\\\\
-----------------------------\\\\$

$\bf \displaystyle \cfrac{1}{3}\int\limits_{2}^{5}\ \cfrac{t}{\sqrt{u}}\cdot \cfrac{du}{2t}\implies \cfrac{1}{3}\cdot \cfrac{1}{2}\int\limits_{2}^{5}\ u^{-\frac{1}{2}}\cdot du\implies \cfrac{1}{6}\int\limits_{2}^{5}\ u^{-\frac{1}{2}}\cdot du
\\\\\\
\left. \cfrac{\sqrt{u}}{3} \right]_{2}^5\implies \cfrac{\sqrt{5}}{3}-\cfrac{\sqrt{2}}{3}\implies \cfrac{\sqrt{5}-\sqrt{2}}{3}$

8 0

3 years ago

Read 2 more answers

(Pls help will give brainliest to best answer!!)<br>Question in picture.

Deffense [45]

Answer:

the missing answer is 25

Step-by-step explanation:

you find the answer by substituting 63.5 for y in the equation

divide both sides by 2.54 to isolate the x and you get 25

4 0

3 years ago