Ayush Khemka
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 3 Find $\int e^{-x}\cos x\,dx$ without using complex numbers 2 How do you divide a complex number with an exponent term? 2 Where am I going wrong in this integration 2 Profit and loss: deciding CP 1 Differentiate $\sin \sqrt{x^2+1}$with respect to $x$?

### Reputation (381)

 +35 How to solve an nth degree polynomial equation +15 If $\displaystyle x^2+\frac{1}{x^2}=66$ then what is the value of $\displaystyle\frac{x^2-1+2x}{x}$? +10 Profit and loss: deciding CP -2 Differentiate $\sin \sqrt{x^2+1}$with respect to $x$?

### Question (1)

 11 How to solve an nth degree polynomial equation

### Tags (14)

 7 integration × 4 1 derivatives × 2 3 calculus × 4 1 real-analysis 2 algebra-precalculus × 2 1 calculus-of-variations 2 complex-numbers 1 functions 1 trigonometry × 2 0 polynomials

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 Mathematics 381 rep 1211 Stack Overflow 213 rep 1619 Game Development 138 rep 4 Physical Fitness 137 rep 5 Super User 116 rep 4