Solving the Limit as x Approaches pi/2

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SUMMARY

The limit as x approaches π/2 from the left for the expression tan(x)/ln(cos(x)) simplifies to 1/(sin(x)cos(x)) after applying L'Hôpital's Rule once. The next step involves multiplying the expression by 2/2 to utilize the identity sin(2x) in the denominator, facilitating further simplification. This approach effectively resolves the limit by transforming the expression into a more manageable form.

PREREQUISITES
  • Understanding of limits in calculus
  • Familiarity with L'Hôpital's Rule
  • Knowledge of trigonometric identities, specifically sin(2x)
  • Basic logarithmic properties related to ln(cos(x))
NEXT STEPS
  • Study advanced applications of L'Hôpital's Rule in limit problems
  • Explore trigonometric identities and their proofs
  • Learn about the behavior of logarithmic functions near their limits
  • Investigate the continuity and differentiability of trigonometric functions
USEFUL FOR

Students and educators in calculus, mathematicians solving limit problems, and anyone interested in advanced trigonometric and logarithmic function analysis.

thenewbosco
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this one looks simpler but i need another one of those tricks i guess:

the limit as x-->pi/2 from the left of:

[tex]\frac{tan x}{ln(cos x)}[/tex]

after taking l'hopital once and simplifying i have ended up with

[tex]\frac{1}{sin x cos x}[/tex]

next is what i don't know
 
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wait never mind i thought of my own trick that works..multiply by 2/2 and use sin2x in the denom.
 

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