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26/20 answers
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Oct
29
reviewed Approve Relationship among $b_1$, $b_2$ and $b_3$ to have a solution
Oct
29
reviewed No Action Needed $\frac{d^2 y}{dx^2}-2y=2\tan^3\left(x\right)$
Oct
29
reviewed No Action Needed Prove that $f(x,y) = 10x^2+ 10y^2 + 12xy + 2x + 6y + 1 \geq 0$
Oct
29
reviewed No Action Needed Can you solve this Halloween raffle probability problem?
Oct
29
reviewed Looks OK How To Prove:$\sum_{n=1}^{\infty} \frac{(-1)^n}{n^4} = -\frac{7}{{720}}{\pi ^4}$
Oct
29
answered product of spaces of bounded linear operators
Oct
29
reviewed No Action Needed Show that $\deg(fg) = m+n$
Oct
29
reviewed No Action Needed martices calculation for gauss-newton method
Oct
29
reviewed Leave Open Characterize entire functions $f$ such that $|f(z)| \leq |\sin(z)|$
Oct
29
reviewed Close The ito integral is gaussian
Oct
29
reviewed Looks OK Calculate the derivative and find its domain: $\;f(x)= \sqrt{\ln(x)+2}$
Oct
29
reviewed Reopen Prove that $n$ doesn't divide $3^n+1$
Oct
29
reviewed Close Find $\lim \limits_{x,y)\to (0,0)}\left(\frac{\sin(x+y)}{x+y}\right)$
Oct
29
reviewed No Action Needed 2 point in time line
Oct
29
reviewed No Action Needed If the absolute value of a function is continuous, is the function continuous?
Oct
29
reviewed Looks OK Why is $|x| \neq x$?
Oct
29
reviewed Approve Proof of the Principle of mathematical Induction
Oct
29
reviewed Close For any integer a, if $6|(3−a)$, then $3| (a−2)$.
Oct
29
reviewed Looks OK Is the square root of the absolute functiom differentiable at x = 0?
Oct
29
reviewed Close Formal explanation for this change of integration