# Equation involving both trigonometric and algebraic functions

• August 1st 2011, 03:47 AM
zhangvict
Equation involving both trigonometric and algebraic functions
How can one solve equations like this?
$(x+1)(tanx) = -1$
• August 1st 2011, 03:50 AM
e^(i*pi)
Re: Equation involving both trigonometric and algebraic functions
With a numerical method - I'd write the equation as $f(x) = (x+1)\tan(x) + 1 =0$ and look for where f(x) changes sign.
• August 1st 2011, 01:30 PM
mr fantastic
Re: Equation involving both trigonometric and algebraic functions
Quote:

Originally Posted by zhangvict
How can one solve equations like this?
$(x+1)(tanx) = -1$

Using CAS technology or applying a numerical method or using a graphical approach.