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3 years ago

12

What are the 4 different ways you can solve a quadratic equation.

1 answer:

mars1129 [50]3 years ago

5 0

Answer:

$by \: using \: completing \: the \: square \: method \\ by \: using \: quadratic \: formula \: \: - b \: plus \: or \: minus \frac{ \sqrt{ {b}^{2} - 4ac } }{2a} \\ by \: factorizing \: \\ this \: it \: the \: only \: one \: i \: know \:$

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Help math question derivative!

atroni [7]

Let $f(x)=\sec^{-1}x$ . Then $\sec f(x)=x$ , and differentiating both sides with respect to $x$ gives

$(\sec f(x))'=\sec f(x)\tan f(x)\,f'(x)=1$
$f'(x)=\dfrac1{\sec f(x)\tan f(x)}$

Now, when $x=\sqrt2$ , you get

$(\sec^{-1})'(\sqrt2)=f'(\sqrt2)=\dfrac1{\sec\left(\sec^{-1}\sqrt2\right)\tan\left(\sec^{-1}\sqrt2\right)}$

You have $\sec^{-1}\sqrt2=\dfrac\pi4$ , so $\sec\left(\sec^{-1}\sqrt2\right)=\sqrt2$ and $\tan\left(\sec^{-1}\sqrt2\right)=1$ . So $(\sec^{-1})'(\sqrt2)=\dfrac1{\sqrt2\times1}=\dfrac1{\sqrt2}$

5 0

3 years ago

Which problem could be solved by evaluating the expression 4×(−6)?

natima [27]

THat would be option c Her cahnge in points would be 4 * -6 = -24.

4 0

3 years ago

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Thanks for the help! Been stuck on this one for a little while.

igor_vitrenko [27]

Answer:

B. $\sqrt{14}$

Step-by-step explanation:

Since 3.74 is rounded to the hundredths place, it is not the ideal exact solution for m^2 = 14.

To solve for m you would have to square root m and 14, which gives you $\sqrt{14}$ . This is the best answer for the problem.

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3 years ago

What are the first 300 digits of pie first answer is brainiest

Gelneren [198K]

Answer:

3.

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42881097566593344612847564823378678316527120190914

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Step-by-step explanation:

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3 years ago

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MARKING BRAINLIEST <br><br> PLS HELP

beks73 [17]

It would be the f(x+3) + 2

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3 years ago

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