# Rbc capital utilization model:error

**URL:** <https://forum.dynare.org/t/rbc-capital-utilization-model-error/27478>\
**Category:** Steady state\
**Created:** [22 April 2025 09:36 UTC](https://forum.dynare.org/t/rbc-capital-utilization-model-error/27478 "2025-04-22T09:36:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ohhosana](https://forum.dynare.org/letter_avatar_proxy/v4/letter/o/76d3ee/32.png) [@ohhosana](https://forum.dynare.org/u/ohhosana)\
**Post date:** [22 April 2025 09:36 UTC](https://forum.dynare.org/t/rbc-capital-utilization-model-error/27478/1 "2025-04-22T09:36:35Z")

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I was asked to find the steady-state of a RBC model with variable capital utilization.the utility function is given by `ln Ct + theta*ln(1-Nt)`. Capital services are defined as `kt=ut* Kt` and the dependence of capital depreciation on capacity utilization is modeled as `delta(ut)=delta_o+ phi_1(ut -1)+{(phi_2)/2}*(ut- 1)^2`  
I was asked to find the steady state of the model normalizing utilization 1.  
I’ve uploaded the code I wrote and which is not working. Can someone please tell me what I’ve done wrong.

thank you  
[wedidit.log](https://forum.dynare.org/uploads/short-url/xvnA4vKquRiFYKPz3mHgQ7EcnsA.log) (628 Bytes)

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**Author:** ![jpfeifer](https://forum.dynare.org/user_avatar/forum.dynare.org/jpfeifer/32/5044_2.png) [@jpfeifer](https://forum.dynare.org/u/jpfeifer)\
**Post date:** [29 April 2025 12:26 UTC](https://forum.dynare.org/t/rbc-capital-utilization-model-error/27478/2 "2025-04-29T12:26:30Z")

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You only uploaded the log file, not the actual code.